text:
The Variation of Animals and Plants under Domestication/Index

INDEX

 * Pacha, a fancier of fantailed pigeons, i. 206.
 * , Mr., on grafting, ii. 147;
 * on mignonette, ii. 237.
 * , Mr. Keith, on the Persian tumbler pigeon, i. 150.
 * of the facial bones, i. 73.
 * of organs, ii. 315-318, 397.
 * of minority in crossed races, ii. 87-89, 174.
 * , ii. 305-315;
 * of maize, i. 322.
 * , on the fertility of domestic animals in Lapland, ii. 112.
 * Achatinella, ii. 53.
 * Achillea millefolium, bud variation in, i. 408.
 * Aconitum napellus, roots of, innocuous in cold climates, ii. 274.
 * Acorus calamus, sterility of, ii. 170.
 * , on fowls in South America at its discovery, i. 237.
 * Acropera, number of seeds in, ii. 379.
 * , Mr., origin of Cytisus Adami, i. 390.
 * , W., on consanguineous marriages, ii. 123.
 * , Mr., on hereditary diseases, ii. 7.
 * in scale of organisation, i. 8.
 * Ægilops triticoides, observations of Fabre and Godron on, i. 313;
 * increasing fertility of hybrids of, with wheat, ii. 110.
 * Æsculus flava and rubicunda, i. 392.
 * Æsculus pavia, tendency of, to become double, ii. 168.
 * Æthusa cynapium, ii. 337.
 * , sexual elective, ii. 180.
 * , white bull from, i. 91;
 * feral cattle in, i. 85;
 * food-plants of savages of, i. 307-309;
 * South, diversity of breeds of cattle in, i. 80;
 * West, change in fleece of sheep in, i. 98.
 * Agave vivipara, seeding of, in poor soil, ii. 169.
 * , changes in trees, dependent on, i. 387.
 * , fertility of, in captivity, ii. 152.
 * , antiquity of, ii. 243.
 * Agrostis, seeds of, used as food, i. 309.
 * , i. 26.
 * , Mr., on the change in the hair of animals at Angora, ii. 278.
 * Khan, his fondness for pigeons, i. 205; ii. 204.
 * Alauda arvensis, ii. 154.
 * , on "Golden Hamburgh" fowls, i. 247;
 * figure of the hook-billed duck, i. 277.
 * , i. 111, ii. 17.
 * , negro, attacked by insects, ii. 229.
 * , heredity of, ii. 9.
 * , thickness of the epidermis on the palms of the hands in man, ii. 297.
 * , i. 31, ii. 102.
 * , on rabbits, i. 104;
 * description of the nun pigeon, i. 156;
 * on the fondness of the Dutch for pigeons in the seventeenth century, i. 205;
 * notice of several varieties of pigeons, i. 207-210;
 * on the breeds of fowls, i. 247;
 * on the origin of the domestic duck, i. 278.
 * , Dr., on the varieties of peas and their specific unity, i. 326;
 * on the varieties of beans, i. 330.
 * the Great, his selection of Indian cattle, ii. 202.
 * , retrogressive metamorphosis in, ii. 361;
 * division of zoospores of, ii. 378.
 * , W., on feral fowls, i. 237; ii. 33.
 * , Professor, on a monstrous Saxifraga geum, ii. 166;
 * on the development of the Hydroida, ii. 368.
 * , i. 337;
 * antiquity of, ii. 429;
 * bitter, not eaten by mice, ii. 232.
 * Alnus glutinosa and incana, hybrids of, ii. 130.
 * , selection of, ii. 208.
 * Althæa rosea, i. 378, ii. 107.
 * Amaryllis, ii. 139.
 * Amaryllis vittata, effect of foreign pollen on, i. 400.
 * , hereditary, ii. 9.
 * , limits within which no useful plants have been furnished by, i. 310;
 * colours of feral horses in, i. 60-61;
 * North, native cultivated plants of, i. 312;
 * skin of feral pig from, i. 77;
 * South, variations in cattle of, i. 88, 92.
 * Amygdalus persica, i. 336-344, 374.
 * , on the persistency of colour in horses, ii. 21.
 * Anagallis arvensis, ii. 190.
 * variation, i. 409, ii. 348-352;
 * in horses, i. 55;
 * in the horse and ass, i. 64;
 * in fowls, i. 243-246.
 * Anas boschas, i. 277, ii. 40;
 * skull of, figured, i. 282.
 * Anas moschata, ii. 40.
 * "" sheep of Massachusetts, i. 100, ii. 103.
 * fowls, i. 227.
 * rabbits, i. 105.
 * , on the origin of British sheep, i. 94;
 * on the selection of qualities in cattle, ii. 196;
 * on a one-eared breed of rabbits, i. 108;
 * on the inheritance of characters from a one-eared rabbit and three-legged bitch, ii. 12;
 * on the persistency of varieties of peas, i. 329;
 * on the production of early peas by selection, ii. 201;
 * on the varieties of the potato, i. 330-331;
 * on crossing varieties of the melon, i. 399;
 * on reversion in the barberry, i. 384.
 * , Mr., on the reproduction of the weeping ash by seed, ii. 19;
 * on the cultivation of the tree pæony in China, ii. 205.
 * , Mr., on the Damara, Bechuana, and Namaqua cattle, i. 88;
 * on the cows of the Damaras, ii. 300;
 * selection practised by the Damaras and Namaquas, ii. 207;
 * on the use of grass-seeds and the roots of reeds as food in South Africa, i. 309.
 * Anemone coronaria, doubled by selection, ii. 200.
 * pectoris, hereditary, occurring at a certain age, ii. 79.
 * , cattle of, i. 80.
 * sheep, i. 95.
 * , change in hair of animals at, ii. 278;
 * cats of, i. 45, 47;
 * rabbits of, i. 106, 120.
 * , domestication of, facilitated by fearlessness of man, i. 20;
 * refusal of wild, to breed in captivity, ii. 149;
 * compound, individual peculiarities of, reproduced by budding, i. 374;
 * variation by selection in useful qualities of, ii. 220.
 * plants, rarity of bud-variation in, i. 408.
 * in the osteology of the horse, i. 50.
 * breeds of pigs, i. 75;
 * of cattle, i. 89.
 * Anser albifrons, characters of, reproduced in domestic geese, i. 288.
 * Anser ægyptiacus, i. 282; ii. 68.
 * Anser canadensis, ii. 157.
 * Anser cygnoides, i. 237.
 * Anser ferus, the original of the domestic goose, i. 287;
 * fertility of cross of, with domestic goose, i. 288.
 * , on feral fowls in the Ladrones, i. 238.
 * between growth and reproduction, ii. 384.
 * Anthemis nobilis, bud-variation in flowers of, i. 379;
 * becomes single in poor soil, ii. 167.
 * , apparent independence of, in algæ, ii. 384.
 * , contabescence of, ii. 165-166.
 * , cats of, i. 46;
 * changed fleece of sheep in, i. 98.
 * Antirrhinum majus, peloric, i. 365; ii. 59, 70, 166;
 * double-flowered, ii. 167;
 * bud-variation in, i. 381.
 * , individual recognition of, ii. 251.
 * , anthropomorphous, ii. 123.
 * , attacking pear-trees, ii. 231;
 * development of, ii. 361-362.
 * , hereditary, occurring at a certain age, ii. 78.
 * , i. 348-350;
 * fruit of, in Swiss lake-dwellings, i. 317;
 * rendered fastigate by heat in India, i. 361;
 * bud-variation in the, i. 376;
 * with dimidiate fruit, i. 392-393;
 * with two kinds of fruit on the same branch, i. 392;
 * artificial fecundation of, i. 401;
 * St. Valéry, i. 401; ii. 166;
 * reversion in seedlings of, ii. 31;
 * crossing of varieties of, ii. 129;
 * growth of the, in Ceylon, ii. 277;
 * Winter Majetin, not attacked by coccus, ii. 231;
 * flower-buds of, attacked by bullfinches, ii. 232;
 * American, change of when grown in England, ii. 275.
 * , i. 344-345;
 * glands on the leaves of, ii. 231;
 * analogous variation in the, ii. 348.
 * Aquila fusca, copulating in captivity, ii. 154.
 * Aquilegia vulgaris, i. 365; ii. 330.
 * boarhound, described by Harcourt, i. 17.
 * Arabis blepharophylla and A. Soyeri, effects of crossing, i. 400.
 * Aralia trifoliata, bud-variation in leaves of, i. 382.
 * , young, variable resistance of, to frost, ii. 309.
 * pigeon, ii. 240.
 * regions, variability of plants and shells of, ii. 256.
 * Aria vestita, grafted on thorns, i. 387.
 * , fowls mentioned by, i. 246.
 * , on solid-hoofed pigs, i. 75;
 * domestic duck unknown to, i. 277;
 * on the assumption of male characters by old hens, ii. 51.
 * , domestication of the, i. 82.
 * of development, ii. 315-318.
 * , increase of anastomosing branches of, when tied, ii. 230.
 * islands, wild pig of, i. 67.
 * , Polynesian varieties of, ii. 256.
 * Ascaris, number of eggs of, ii. 379.
 * , varieties of the, i. 360;
 * weeping, i. 361;
 * simple-leaved, i. 362;
 * bud-variation in, i. 382;
 * effects of graft upon the stock in the, i. 394;
 * production of the blotched Breadalbane, ibid.;
 * weeping, capricious reproduction of, by seed, ii. 19.
 * Asinus Burchellii, i. 64.
 * Asinus hemionus, ii. 43.
 * Asinus indicus, ii. 42-43, 48.
 * Asinus quagga, i. 64.
 * Asinus tæniopus, ii. 41;
 * the original of the domestic ass, i. 62.
 * , increased fertility of cultivated, ii. 113.
 * , early domestication of the, i. 62;
 * breeds of, ibid.;
 * small size of, in India, ibid.;
 * stripes of, i. 62-63; ii. 351;
 * dislike of to cross water, i. 181;
 * reversion in, ii. 41-43, 47;
 * hybrid of the, with mare and zebra, ii. 42;
 * prepotency of the, over the horse, ii. 67-68;
 * crossed with wild ass, ii. 206;
 * variation and selection of the, ii. 236.
 * sculpture of a mastiff, i. 17.
 * , ii. 20, 316.
 * , hereditary, ii. 8, 79.
 * . See Reversion.
 * , his care of horses, ii. 203.
 * , Mr., on the sterility of the Tarroo silk-moth in confinement, ii. 157.
 * , ii. 91.
 * , on feral hybrid ducks, i. 190; ii. 46;
 * on the domestication of wild ducks on the Mississippi, i. 278;
 * on the wild cock turkey visiting domestic hens, i. 292;
 * fertility of Fringilla ciris in captivity, ii. 154;
 * fertility of Columba migratoria and leucocephala in captivity, ii. 155;
 * breeding of Anser canadensis in captivity, ii. 157.
 * and Bachman, on the change of coat in Ovis montana, i. 99;
 * sterility of Sciurus cinerea in confinement, ii. 152.
 * , effect of seasonal conditions on the, ii. 273;
 * blooming of, ii. 346.
 * , no generally useful plants derived from, i. 310;
 * useful plants of, enumerated by Hooker, i. 311.
 * , heredity of character in emperors of, ii. 65.
 * , on persistency of colour in horses, ii. 21.
 * , horses of, i. 53.
 * Avena fatua, cultivability of, i. 313.
 * Akbery, pigeons mentioned in the, i. 150, 155, 185, 205, 207, 208.
 * , on bud-variation in pelargoniums, i. 378.
 * Azalea indica, bud-variation in, i. 377.
 * , on the feral dogs of La Plata, i. 27;
 * on the crossing of domestic with wild cats in Paraguay, i. 45;
 * on hornlike processes in horses, i. 50;
 * on curled hair in horses, i. 54; ii. 205, 325;
 * on the colours of feral horses, i. 60, 61; ii. 259;
 * on the cattle of Paraguay and La Plata, i. 82, 86, 89; ii. 250;
 * on a hornless bull, ii. 205;
 * on the increase of cattle in South America, ii. 119;
 * on the growth of horns in the hornless cattle of Corrientes, ii. 39;
 * on the "Niata" cattle, i. 90;
 * on naked quadrupeds, ii. 279;
 * on a race of black-skinned fowls in South America, i. 258; ii. 209;
 * on a variety of maize, i. 321.

 * , on the origin of the plum, i. 345;
 * British species of the genus Rosa, i. 366;
 * distinctness of Viola lutea and tricolor, i. 368.
 * , Mr., on the turkey, ii. 262.
 * See also Audubon.
 * , breeding in confinement, ii. 151.
 * "," i. 141.
 * , Mr., on the effect of selection on fowls, ii. 198;
 * on Dorking fowls, ii. 238.
 * , on the origin of the turkey, i. 292.
 * , Mr., on heredity in the horse, ii. 11;
 * on the degeneration of the horse by neglect, ii. 239;
 * orders of Henrys VII. and VIII. for the destruction of undersized mares, ii. 203.
 * , change in the sheep effected by, ii. 198.
 * , ii. 342-344;
 * of growth, law of, i. 274.
 * , pigeon, i. 151.
 * , in man, inherited, ii. 73-74;
 * with deficiency in teeth, ii. 326-327.
 * , Mr., on the effects of interbreeding on fowls, ii. 125;
 * on variation in the eggs of fowls, i. 248.
 * Ballota nigra, transmission of variegated leaves in, i. 383.
 * , varieties of the, ii. 256.
 * , variation of the, i. 372; ii. 256, 258;
 * bud-variation in the, i. 377;
 * sterility of the, ii. 268.
 * fowls, i. 230;
 * Sebright, origin of, ii. 96;
 * sterility of, ii. 101.
 * (Pigeon), i. 144-146, 210; ii. 227;
 * figure of, i. 145;
 * figure of lower jaw of, i. 164.
 * , of wheat, i. 314.
 * , dark or red-leaved variety, i. 362; ii. 19;
 * reversion in suckers of seedless variety, i. 384.
 * , on the dogs of Guinea, i. 25;
 * on the domestic pigeons in Guinea, i. 186;
 * fowls not native in Guinea, i. 237.
 * , acquisition of the habit of, by various dogs, i. 27.
 * , wild, i. 313;
 * of the lake-dwellings, i. 317-318;
 * ancient variety of, ii. 429.
 * , Mr., production of early peas by selection, ii. 201.
 * , Mr., on the intercrossing of strawberries, i. 351;
 * diœciousness of the Hautbois strawberry, i. 353;
 * on the scarlet American strawberry, ii. 200.
 * , Dr., use of grass-seeds as food in Central Africa, i. 308.
 * , on the origin of "Himalayan" rabbits by intercrossing, i. 109;
 * on the feral rabbits of Porto Santo, i. 114;
 * on geese with reversed feathers on the head and neck, i. 288;
 * on the young of the black-shouldered peacock, i. 290;
 * on the breeding of the Felidæ in captivity, ii. 150.
 * , on the black wolf-dog of Florida, i. 22.
 * , refusal of wild animals to breed in captivity, ii. 150, 152;
 * sterility of American monkeys in captivity, ii. 153;
 * sterility of tamed guans, ii. 156.
 * , regeneration of lost parts in, ii. 15.
 * , raised, in Peru, containing heads of maize, i. 320.
 * , variability of, in fowls, i. 258;
 * individual differences of, in pigeons, i. 160;
 * correlation of, with the feet in pigeons, i. 171-174.
 * , Lionel, on the contents of cells, ii. 370;
 * on the multiplication of infectious atoms, ii. 378;
 * on the origin of fibres, ii. 382.
 * , i. 330;
 * of Swiss lake-dwellings, i. 319;
 * varieties of, produced by selection, ii. 218;
 * French and scarlet, variable resistance of to frost, ii. 309, 314;
 * superiority of native seed of, ii. 314;
 * a symmetrical variation of scarlet, ii. 322;
 * experiments on kidney, i. 330;
 * with monstrous stipules and abortive leaflets, ii. 343.
 * , pigeon, i. 151.
 * , breeding in captivity, ii. 151.
 * , reversion in crossed cattle, ii. 41.
 * , effect of soil upon strawberries, i. 353;
 * on varieties of pelargonium, i. 364, ii. 274, 311;
 * bud-variation in Gladiolus colvillii, i. 382;
 * cross between Scotch kail and cabbage, ii. 98;
 * hybrid gladiolus, ii. 139;
 * constant occurrence of new forms among seedlings, ii. 235;
 * on the doubling of the compositæ, ii. 316.
 * cattle, i. 88.
 * , Mr., constitutional differences in pelargoniums, i. 364.
 * , on changes in the odours of plants, ii. 274.
 * , on the burrowing of wolves, i. 27;
 * "Spitz" dog, i. 31;
 * origin of the Newfoundland dog, i. 42;
 * crossing of domestic and wild swine, i. 66;
 * on the Jacobin pigeon, i. 154, 209;
 * notice of swallow-pigeons, i. 156;
 * on a fork-tailed pigeon, i. 157;
 * variations in the colour of the croup in pigeons, i. 184;
 * on the German dove-cot pigeon, i. 185;
 * fertility of mongrel pigeons, i. 192;
 * on hybrid turtle-doves, i. 193;
 * on crossing the pigeon with Columba œnas, C. palumbus, Turtur risoria, and T. vulgaris, i. 193;
 * development of spurs in the silk-hen, i. 256;
 * on Polish fowls, i. 257, 264;
 * on crested birds, i. 257;
 * on the Canary-bird, i. 295, ii. 22, 161;
 * German superstition about the turkey, i. 293;
 * occurrence of horns in hornless breeds of sheep, ii. 30;
 * hybrids of the horse and ass, ii. 68;
 * crosses of tailless fowls, ii. 92;
 * difficulty of pairing dove-cot and fancy pigeons, ii. 103;
 * fertility of tame ferrets and rabbits, ii. 112;
 * fertility of wild sow, ibid.;
 * difficulty of breeding caged birds, ii. 154;
 * comparative fertility of Psittacus erithacus in captivity, ii. 155;
 * on changes of plumage in captivity, ii. 158;
 * liability of light-coloured cattle to the attacks of flies, ii. 229;
 * want of exercise a cause of variability, ii. 257;
 * effect of privation of light upon the plumage of birds, ii. 280;
 * on a sub-variety of the monk-pigeon, ii. 350.
 * , Dr., correlation of complexion with consumption, ii. 335.
 * gall, ii. 284.
 * , persistency of character of, ii. 236, 254;
 * intercrossing, ii. 126;
 * conveyance, of pollen of peas by, i. 329.
 * , self-fertilisation of, ii. 91.
 * , dark-leaved, i. 362, ii. 19;
 * fern-leaved, reversion of, i. 382;
 * weeping, non-production of by seed, ii. 19.
 * , horses of Loochoo Islands, i. 53.
 * , i. 326;
 * increase of sugar in, by selection, ii. 201.
 * Begonia frigida, singular variety of, i. 365;
 * sterility of, ii. 166.
 * rabbit, i. 106.
 * , statement that white cattle have coloured ears, i. 85.
 * , bud-variation in Cistus tricuspis, i. 377.
 * , observations on gestation in the dog, i. 30;
 * on the fertility of dogs and cats, ii. 112.
 * , on high-flying pigeons in Paphlagonia, i. 209;
 * varieties of the goose, i. 289.
 * , cattle of, i. 88.
 * , Dr. G., pigs of the Pacific islands, i. 70, 87;
 * dogs of the Pacific islands, i. 87;
 * varieties of cultivated plants in Tahiti, ii. 256.
 * , Mr., on the fallow deer, ii. 103.
 * , number and origin of cultivated plants, i. 306;
 * cereals all cultivated varieties, i. 312;
 * species of the orange group, i. 334-335;
 * distinctions of almond and peach, i. 338;
 * British species of Rosa, i. 366;
 * identity of Viola lutea and tricolor, i. 368.
 * Berberis vulgaris, i. 384, ii. 19.
 * Berberis Wallichii, indifference of, to climate, ii. 164.
 * , on the history of the dog, i. 16, 18.
 * , production of hen-cocks in a strain of game-fowls, i. 253.
 * , crossing of varieties of the pea, i. 397;
 * effect of foreign pollen on grapes, i. 400;
 * on hybrid plants, ii. 131;
 * analogy between pollen of highly-cultivated plants and hybrids, ii. 268;
 * on Hungarian kidney-beans, ii. 275;
 * failure of Indian wheat in England, ii. 307;
 * bud developed on the petal of a Clarkia, ii. 384.
 * , inheritance of disease in the horse, ii. 10.
 * , independence of the organs of the body, ii. 368-369;
 * special affinities of the tissues, ii. 380.
 * , varieties of plants with laciniated leaves, ii. 348.
 * Bernicla antarctica, i. 288.
 * , on feral pigeons in Juan Fernandez, i. 190.
 * Betula alba, ii. 18.
 * , on the British wild cattle, i. 84.
 * , reference to breeding studs of horses in, i. 54;
 * references to domestic pigeons in the, i. 205;
 * indications of selection of sheep in the, ii. 201;
 * notice of mules in the, ii. 202.
 * , Mr., on self-impotence in Amaryllis, ii. 139.
 * , weeping, i. 387, ii. 18.
 * , Dr. S., on the ancient domestication of the pigeon in Egypt, i. 205;
 * notice of bantam fowls in a Japanese encyclopædia, i. 230, 247.
 * , Wyrley, on silver-grey rabbits, i. 109-110.
 * , sterility caused in, by change of conditions, ii. 153-157.
 * , tendency of the, to become double, ii. 168.
 * , Mr., on wry-legged terriers, ii. 245.
 * , origin and history of the dog, i. 15-16;
 * variations in the number of teeth in dogs, i. 34;
 * variations in the number of toes in dogs, i. 35;
 * on mummies of cats, i. 43;
 * on the osteology of solid-hoofed pigs, i. 75;
 * on feral Patagonian and N. American pigs, i. 77.
 * "," i. 156.
 * , hereditary, ii. 7, 8;
 * sexual limitation of excessive, ii. 73.
 * of crossed races, time occupied by the, ii. 87.
 * , hereditary, ii. 9;
 * at a certain age, ii. 78;
 * associated with colour of hair, ii. 328.
 * , degeneration of, caused by interbreeding, ii. 121.
 * , on the protuberance of the skull in Polish fowls, i. 257;
 * on the effect of circumcision, ii. 23;
 * inheritance of a crooked finger, ii. 23;
 * on badger-dogs and other varieties of the dog, ii. 220;
 * on Hydra, ii. 293;
 * on the "nisus formativus," ii. 294.
 * , on the Pariah dog, i. 24;
 * hybrids of dog and jackal, i. 32;
 * early domestication of cats in India, i. 43;
 * origin of domestic cat, ib.;
 * crossing of domestic and wild cats, i. 44;
 * on Indian cats resembling Felis chaus, i. 45;
 * on striped Burmese ponies, i. 58;
 * on the stripes of the ass, i. 63;
 * on Indian wild pigs, i. 66;
 * on humped cattle, i. 79, 80;
 * occurrence of Bos frontosus in Irish crannoges, i. 81;
 * fertile crossing of zebus and common cattle, i. 83;
 * on the species of sheep, i. 94;
 * on the fat-tailed Indian sheep, i. 96;
 * origin of the goat, i. 101;
 * on rabbits breeding in India, i. 112;
 * number of tail-feathers in fantails, i. 146;
 * Lotan tumbler pigeons, i. 150;
 * number of tail-feathers in Ectopistes, i. 159;
 * on Columba affinis, i. 183;
 * pigeons roosting in trees, i. 181;
 * on Columba leuconota, i. 182;
 * on Columba intermedia of Strickland, i. 184;
 * variation in colour of croup in pigeons, i. 184-185, 197;
 * voluntary domestication of rock-pigeons in India, i. 185;
 * feral pigeons on the Hudson, i. 190;
 * occurrence of sub-species of pigeons, i. 204;
 * notice of pigeon-fanciers in Delhi, &c., i. 206;
 * hybrids of Gallus Sonneratii and the domestic hen, i. 234;
 * supposed hybridity of Gallus Temminckii, i. 235;
 * variations and domestication of Gallus bankiva, i. 235-236, 237;
 * crossing of wild and tame fowls in Burmah, i. 236;
 * restricted range of the larger gallinaceous birds, i. 237;
 * feral fowls in the Nicobar islands, i. 238;
 * black-skinned fowls occurring near Calcutta, i. 256;
 * weight of Gallus bankiva, i. 272;
 * degeneration of the turkey in India, i. 294, ii. 278;
 * on the colour of gold-fish, i. 296;
 * on the Ghor-Khur (Asinus indicus), ii. 42;
 * on Asinus hemionus, ii. 43;
 * number of eggs of Gallus bankiva, ii. 112;
 * on the breeding of birds in captivity, ii. 157;
 * co-existence of large and small breeds in the same country, ii. 279;
 * on the drooping ears of the elephant, ii. 301;
 * homology of leg and wing feathers, ii. 323.
 * on Scotch wild cattle, i. 85.
 * and Corbié, on the breeds of pigeons, i. 132;
 * Lille pouter pigeon, i. 138;
 * notice of a gliding pigeon, i. 156;
 * variety of the pouter pigeon, i. 162;
 * dove-cot pigeon, i. 185;
 * crossing pigeons, i. 192-193, ii. 97, 126;
 * sterility of hybrids of turtle-doves, i. 193;
 * reversion of crossed pigeons, i. 197, ii. 40;
 * on the fantail, i. 208, ii. 66;
 * on the trumpeter, ii. 66;
 * prepotency of transmission in silky fantail, ii. 67, 69;
 * secondary sexual characters in pigeons, ii. 74;
 * crossing of white and coloured turtle-doves, ii. 92;
 * fertility of pigeons, ii. 112.
 * , wingless females of, ii. 299.
 * Bombyx hesperus, ii. 304.
 * Bombyx Huttoni, i. 302.
 * Bombyx mori, i. 300-304.
 * , on maize, i. 320, 321.
 * , number of species of Columbidæ, i. 133;
 * number of tail-feathers in pigeons, i. 158;
 * size of the feet in Columbidæ, i. 174;
 * on Columba guinea, i. 182;
 * Columba turricola, rupestris, and Schimperi, i. 184.
 * Bonatea speciosa, development of ovary of, i. 403.
 * , Dr., growth of cauliflowers in India, ii. 310.
 * , removal of portions of, ii. 296;
 * regeneration of, ii. 294;
 * growth and repair of, ii. 381-382.
 * , on the salamander, ii. 15, 341, 358, 385;
 * theory of reproduction, ii. 385.
 * , experiments with the seeds of the weeping ash, ii. 19.
 * , i. 323.
 * , on Polish fowls, i. 247.
 * , fowls of, with tail-bands, i. 235.
 * , condition of the ovary in hybrid Cisti, i. 389;
 * self-impotence of hybrid Cisti, ii. 140.
 * , on pointers, i. 42.
 * de Saint-Vincent, on gold-fish, i. 297.
 * Bos, probable origin of European domestic cattle from three species of, i. 83.
 * Bos frontosus, i. 79, 81-82.
 * Bos indicus, i. 79.
 * Bos longifrons, i. 79, 81.
 * Bos primigenius, i. 79-81, 119.
 * Bos sondaicus, ii. 206.
 * Bos taurus, i. 79.
 * Bos trochoceros, i. 81.
 * , heredity in foliage-varieties of the elm, i. 362.
 * , production of double flowers from old seed, ii. 167.
 * , on breeding dark-coloured silkworms, i. 302.
 * , on the vine disease, i. 334.
 * , on local diseases, ii. 276;
 * resistance to cold of dark-complexioned men, ii. 335.
 * "," i. 137.
 * " d'Alep," ii. 276.
 * , Prof., doubts as to the importance of inheritance, ii. 3.
 * , Mr., hereditary peculiarities in the human eye, ii. 8-10;
 * hereditary cataract, ii. 79.
 * , Mr., on Hungarian cattle, i. 80.
 * Brachycome iberidifolia, ii. 261.
 * , unusual development of, in gooseberries, i. 355.
 * , Mr., effect of grafts upon the stock in the ash, i. 394;
 * effect of foreign pollen upon apples, i. 401;
 * on change of soil, ii. 146.
 * " Pootras," a new breed of fowls, i. 245.
 * , proportion of, in hares and rabbits, i. 126-129.
 * , origin of the goat, i. 101.
 * Brassica, varieties of, with enlarged stems, ii. 348.
 * Brassica asperifolia, ii. 343.
 * Brassica napus, i. 325.
 * Brassica oleracea, i. 323.
 * Brassica rapa, i. 325, ii. 165.
 * , bud-variation in the vine, i. 375;
 * in the currant, i. 376;
 * in Mirabilis jalapa, i. 382;
 * in Cytisus adami, i. 388;
 * on reversion in the foliage of trees, i. 382;
 * spontaneous production of Cytisus purpureo-elongatus, i. 390;
 * reversion of flowers by stripes and blotches, ii. 37;
 * excess of nourishment a source of variability, ii. 257.
 * , cattle of, i. 88.
 * , varieties of, ii. 256;
 * sterility and variability of, ii. 262.
 * , bud-variation in Geranium pratense and Centaurea cyanus, i. 379;
 * by tubers in the dahlia, i. 385;
 * on the deafness of white cats with blue eyes, ii. 329.
 * , high, dependent on inheritance, ii. 3-4.
 * , domestic, persistency of, ii. 246, 428-429;
 * artificial and natural, ii. 413-414;
 * extinction of, ii. 425;
 * of domestic cats, i. 45-47;
 * of pigs produced by crossing, i. 78;
 * of cattle, i. 86-87, 91-93;
 * of goats, i. 101.
 * , on Columba amaliæ, i. 183.
 * , number of mammæ in rabbits, i. 106;
 * habits of the tumbler pigeon, i. 151;
 * Laugher pigeon, i. 155;
 * colouring of the kite tumbler, i. 160;
 * crossing of the pigeon with Columba œnas, i. 193;
 * mongrels of the trumpeter pigeon, ii. 66;
 * close interbreeding of pigeons, ii. 126;
 * opinion on Aldrovandi's fowls, i. 247;
 * on stripes in chickens, i. 249-250;
 * on the combs of fowls, i. 253;
 * double-spurred Dorking fowls, i. 255;
 * effect of crossing on colour of plumage in fowls, i. 258;
 * incubatory instinct of mongrels between non-sitting varieties of fowls, ii. 44;
 * origin of the domestic duck, i. 277;
 * fertility of the hook-billed duck, ibid.;
 * occurrence of the plumage of the wild duck in domestic breeds, i. 280;
 * voice of ducks, i. 281;
 * occurrence of a short upper mandible in crosses of hook-billed and common ducks, i. 281;
 * reversion in ducks produced by crossing, ii. 40;
 * variation of the canary-bird, i. 295;
 * fashion in the canary, ii. 240;
 * hybrids of canary and finches, ii. 45.
 * , on raising nectarines from seed, i. 340;
 * on the horses of North Carolina, ii. 300.
 * , Mr., on the dogs of Tierra del Fuego, i. 39;
 * on the selection of dogs by the Fuegians, ii. 207.
 * , reproduction of abnormal ferns, i. 383, ii. 379.
 * , regeneration of portions of the fins of fishes, ii. 15.
 * , on the intercrossing of dogs, i. 31-32;
 * on hybrids of hare and rabbit, i. 105;
 * on the rumpless fowl, i. 259;
 * on the character of half-castes, ii. 47;
 * degree of fertility of mongrels, ii. 100;
 * sterility of descendants of wild animals bred in captivity, ii. 160.
 * , i. 323;
 * rudimentary flowers in, ii. 316;
 * tenderness of, ii. 310.
 * , doubling of the Canterbury bell by selection, ii. 200.
 * , Dr., sterility of the ivy and Acorus calamus, ii. 170.
 * Bromus secalinus, i. 314.
 * , bud-variation in Anthemis, i. 379;
 * effects of cross-breeding on the female, i. 404;
 * on heredity in a one-horned cow, ii. 12, 13;
 * propagation of a pendulous peach by seed, ii. 18;
 * absorption of the minority in crossed races, ii. 88;
 * on the crossing of horses, ii. 92;
 * fertility of tame rabbits and sheep, ii. 112;
 * changes of plumage in captivity, ii. 158;
 * on the dahlia, ii. 261.
 * period, dog of, i. 18.
 * , variations in the dentition of the horse, i. 50.
 * , Dr., inheritance of artificially-produced epilepsy in the guinea-pig, ii. 24.
 * Brunswigia, ii. 139.
 * Sprouts, i. 323, ii. 429.
 * Bubo maximus, ii. 154.
 * , on oysters, ii. 280;
 * number of eggs in a codfish, ii. 379.
 * , Mr., doubts as to the importance of inheritance, ii. 3.
 * , Miss, carrier-pigeons roosting in trees, i. 181.
 * , Prof., cultivation of Avena fatua, i. 313;
 * cultivation of the wild parsnip, i. 326, ii. 201, 277;
 * reversion in the parsnip, ii. 31.
 * , injurious to white pigs, when in flower, ii. 337.
 * and seed, close analogy of, i. 411.
 * , ii. 37.
 * , adventitious, ii. 384.
 * , i. 373-411, ii. 254, 287-288, 291;
 * contrasted with seminal reproduction, i. 373;
 * peculiar to plants, i. 374;
 * in the peach, i. 340, 374;
 * in plums, i. 375;
 * in the cherry, ibid.;
 * in grapes, ibid.;
 * in the gooseberry, currant, pear, and apple, i. 376;
 * in the banana, camellia, hawthorn, Azalea indica, and Cistus tricuspis, i. 377;
 * in the hollyhock and pelargonium, i. 378;
 * in Geranium pratense and the chrysanthemum, i. 379;
 * in roses, i. 367, 379-381;
 * in sweet williams, carnations, pinks, stocks, and snapdragons, i. 381;
 * in wall-flowers, cyclamen, Œnothera biennis, Gladiolus colvillii, fuchsias, and Mirabilis jalapa, i. 382;
 * in foliage of various trees, i. 382-384;
 * in cryptogamic plants, i. 383;
 * by suckers in Phlox and barberry, i. 384;
 * by tubers in the potato, ibid.;
 * in the dahlia, i. 385;
 * by bulbs in hyacinths, Imatophyllum miniatum, and tulips, i. 385;
 * in Tigridia conchiflora, i. 386;
 * in Hemerocallis, ibid.;
 * doubtful cases, i. 386-387;
 * in Cytisus Adami, i. 387-394;
 * probable in Æsculus rubicunda, i. 392;
 * summary of observations on, 406.
 * , on crossing the wolf and dog, i. 32;
 * increase of fertility by domestication, ii. 111;
 * improvement of plants by unconscious selection, ii. 216;
 * theory of reproduction, ii. 375.
 * Bulimus, ii. 53.
 * , apparent influence of, on offspring, ii. 68.
 * , i. 345.
 * , recent modifications of, i. 42.
 * , breeding in captivity, ii. 154;
 * attacking flower-buds, ii. 232.
 * , Mr., selection of pouter pigeons, ii. 197.
 * "," i. 67.
 * , reed, in captivity, ii. 158.
 * , crossing of domestic and wild animals, i. 66;
 * aversion of the wild boar to barley, ii. 303.
 * , Mr., inheritance in the horse, ii. 10.
 * Burlingtonia, ii. 135.
 * , cats of, i. 47.
 * ponies, striped, i. 58, 59.
 * , Sir A., on the Karakool sheep, i. 98, ii. 278;
 * varieties of the vine in Cabool, i. 333;
 * hawks, trained in Scinde, ii. 153;
 * pomegranates producing seed, ii. 168.
 * Constable, wild cattle at, i. 84.
 * "," i. 150.
 * carrier, i. 141.
 * Buteo vulgaris, copulation of, in captivity, ii. 154.
 * , polymorphic, ii. 399-400.
 * , Girou de, inheritance of tricks, ii. 6.

 * , pears grafted on the quince, ii. 239.
 * , i. 323-326;
 * varieties of, i. 323;
 * unity of character in flowers and seeds of, i. 323-324;
 * cultivated by ancient Celts, i. 324;
 * classification of varieties of, ibid.;
 * ready crossing of, ibid., ii. 90, 91, 98, 130;
 * origin of, i. 325;
 * increased fertility of, when cultivated, ii. 113;
 * growth of, in tropical countries, ii. 277.
 * , vines of, i. 333.
 * , on early cultivation in Brazil, i. 311.
 * , growth of cochineal on, in India, ii. 275.
 * , Bos primigenius wild in Europe in the time of, i. 81;
 * notice of fowls in Britain, i. 246;
 * notice of the importation of horses by the Celts, ii. 203.
 * fowls, i. 230.
 * , different kinds of cattle possessed by the, i. 88.
 * "," a breed of sheep, i. 95.
 * , i. 364; ii. 147;
 * effects of seasonal conditions on, ii. 274;
 * peloric flowers in, ii. 346.
 * "," a Columbian breed of cattle, i. 88.
 * , Mr., on a seedling peach producing both peaches and nectarines, i. 341.
 * , segments of the, converted into carpels, ii. 392.
 * , its dislike to crossing water, i. 181.
 * Camellia, bud-variations in, i. 377;
 * recognition of varieties of, ii. 251;
 * variety in, hardiness of, ii. 308.
 * , on the cultivation of Alpine plants, ii. 163.
 * , Baron, value of English blood in race-horses, ii. 11.
 * Campanula medium, ii. 200.
 * , i. 295;
 * conditions of inheritance in, ii. 22;
 * hybrids of, ii. 45;
 * period of perfect plumage in, ii. 77;
 * diminished fertility of, ii. 161;
 * standard of perfection in, ii. 195;
 * analogous variation in, ii. 349.
 * , heredity of, ii. 7, 8, 79.
 * teeth, development of the, in mares, ii. 318.
 * Canis alopex, i. 29.
 * Canis antarcticus, i. 20.
 * Canis argentatus, ii. 151.
 * Canis aureus, i. 29.
 * Canis cancrivorus, domesticated and crossed in Guiana, i. 23.
 * Canis cinereo-variegatus, i. 29.
 * Canis fulvus, i. 29.
 * Canis Ingæ, the naked Peruvian dog, i. 23.
 * Canis latrans, resemblance of, to the Hare Indian dog, i. 22;
 * one of the original stocks, i. 26.
 * Canis lupaster, i. 25.
 * Canis lupus, var. occidentalis, resemblance of, to North American dogs, i. 21;
 * crossed with dogs, i. 22;
 * one of the original stocks, i. 26.
 * Canis mesomelas, i. 25, 29.
 * Canis primævus, tamed by Mr. Hodgson, i. 26.
 * Canis sabbar, i. 25.
 * Canis simensis, possible original of greyhounds, i. 33.
 * Canis thaleb, i. 29.
 * Canis variegatus, i. 29.
 * Bell, doubled by selection, ii. 200.
 * of Good Hope, different kinds of cattle at the, i. 88;
 * no useful plants derived from the, i. 310.
 * , breeding in captivity, ii. 156.
 * Capra ægagrus and C. Falconeri, probable parents of domestic goat, i. 101.
 * , i. 371.
 * , on a variety of the walnut, i. 356;
 * on grafted walnuts, ii. 259-260.
 * , ii. 34.
 * Carex rigida, local sterility of the, ii. 170.
 * , early selection of sheep, ii. 204.
 * , Sir A., inheritance of peculiarities, ii. 6, 8;
 * of polydactylism, ii. 13.
 * "" pigeon, i. 156.
 * , bud-variation in, i. 381;
 * variability of, i. 370;
 * striped, produced by crossing red and white, i. 393;
 * effect of conditions of life on the, ii. 273.
 * , general fertility of, in captivity, ii. 150.
 * Archipelago, cats of, i. 47.
 * , ii. 236.
 * , variation of, in cultivated cucurbitaceæ, i. 359.
 * , regeneration of bone, ii. 294;
 * production of double monsters, ii. 340;
 * number of eggs in an Ascaris, ii. 379.
 * Carpinus betulus, i. 362.
 * Carpophaga littoralis and luctuosa, i. 182.
 * pigeon, i. 139-142;
 * English, i. 139-141;
 * figured, i. 140;
 * skull figured, i. 163;
 * history of the, i. 211;
 * Persian, i. 141;
 * Bussorah, ibid.;
 * Bagadotten, skull figured, i. 163;
 * lower jaw figured, i. 165.
 * , cultivation of the wild carrot, i. 326;
 * intermediate form between the almond and the peach, i. 338;
 * glands of peach-leaves, i. 343;
 * bud-variation in the vine, i. 375;
 * grafts of Aria vestita upon thorns, i. 387;
 * variability of hybrids of Erythrina, ii. 265.
 * , wild, effects of cultivation on the, i. 326;
 * reversion in the, ii. 31;
 * run wild, ii. 33;
 * increased fertility of cultivated, ii. 113;
 * experiments on the, ii. 277;
 * acclimatisation of the, in India, ii. 311.
 * Carthamus, abortion of the pappus in, ii. 316.
 * , cultivation of native plants in Canada, i. 312.
 * , frequency of contabescence in the, ii. 165.
 * , bud-variation in the moss-rose, i. 380;
 * on the ovules and pollen of Cytisus, i. 388-389;
 * crossing of Cytisus purpureus and C. laburnum, i. 389;
 * trifacial orange, i. 391;
 * differently-coloured flowers in the wild Viola lutea, i. 408;
 * sterility of the horse-radish, ii. 170.
 * , on Brazilian cattle, i. 88.
 * , assumption of female characters caused by, ii. 51-52.
 * Casuarius bennettii, ii. 156.
 * , domestic, i. 43-48;
 * early domestication and probable origin of the, i. 43-44;
 * intercrossing of with wild species, i. 44-45;
 * variations of, i. 45-48;
 * feral, i. 47, ii. 33;
 * anomalous, i. 48;
 * polydactylism in, ii. 14;
 * black, indications of stripes in young, ii. 55;
 * tortoiseshell, ii. 73;
 * effects of crossing in, ii. 86;
 * fertility of, ii. 111;
 * difficulty of selection in, ii. 234, 236;
 * length of intestines in, ii. 302;
 * white with blue eyes, deafness of, ii. 329;
 * with tufted ears, ii. 350.
 * , hereditary, ii. 9, 79.
 * , effect of changed food on, ii. 280.
 * , colour of feral horses in North America, i. 61.
 * , European, their probable origin from three original species, i. 79-82;
 * humped, or Zebus, i. 79-80;
 * intercrossing of, i. 83, 91-93;
 * wild, of Chillingham, Hamilton, Chartley, Burton Constable, and Gisburne, i. 84, ii. 119;
 * colour of feral, i. 84-85, ii. 102;
 * British breeds of, i. 86-87;
 * South African breeds of, i. 88;
 * South American breeds of, i. 89, ii. 205;
 * Niata, i. 89-91, ii. 205, 208, 332;
 * effects of food and climate on, i. 91-92;
 * effects of selection on, i. 92-93;
 * Dutch-buttocked, ii. 8;
 * hornless, production of horns in, ii. 29-30, 39;
 * reversion in, when crossed, ii. 41;
 * wildness of hybrid, ii. 45;
 * short-horned, prepotency of, ii. 65;
 * wild, influence of crossing and segregation on, ii. 86;
 * crosses of, ii. 96, 104, 118;
 * of Falkland islands, ii. 102;
 * mutual fertility of all varieties of, ii. 110;
 * effects of interbreeding on, ii. 117-119;
 * effects of careful selection on, ii. 194, 199;
 * naked, of Columbia, ii. 205;
 * crossed with wild banteng in Java, ii. 206;
 * with reversed hair in Banda Oriental, ii. 205;
 * selection of trifling characters in, ii. 209;
 * fashion in, ii. 210;
 * similarity of best races of, ii. 241;
 * unconscious selection in, ii. 214;
 * effects of natural selection on anomalous breeds of, ii. 226-227;
 * light-coloured, attacked by flies, ii. 229, 336;
 * Jersey, rapid improvement of, ii. 234;
 * effects of disuse of parts in, ii. 299;
 * rudimentary horns in, ii. 315;
 * supposed influence of humidity on the hair of, ii. 326;
 * white spots of, liable to disease, ii. 337;
 * supposed analogous variation in, ii. 349;
 * displacement of long-horned by short-horned, ii. 426.
 * , i. 323;
 * free-seeding of, in India, ii. 310;
 * rudimentary flowers in, ii. 316.
 * pigeon, ii. 97.
 * Cavia aperea, ii. 152.
 * (Cebus azaræ), sterility of, in confinement, ii. 153.
 * Cebus azaræ, ii. 153.
 * Cecidomyia, larval development of, ii. 283, 360, 367;
 * and Misocampus, i. 5.
 * of Lebanon and Atlas, i. 364.
 * , turnip-rooted, i. 336;
 * run wild, ii. 33.
 * , ii. 370.
 * Celosia cristata, i. 365.
 * , on the selection of seed-corn, i. 318, ii. 203.
 * , early cultivation of the cabbage by the, i. 324;
 * selection of cattle and horses by the, ii. 202-203.
 * Cenchrus, seeds of a, used as food, i. 309.
 * Centaurea cyanus, bud-variation in, i. 379.
 * , spermatophores of, ii. 383.
 * Cerasus padus, yellow-fruited, ii. 19.
 * Cercoleptes, sterility of, in captivity, ii. 152.
 * Cercopithecus, breeding of a species of, in captivity, ii. 153.
 * , i. 312-313;
 * of the Neolithic period in Switzerland, i. 317;
 * adaptation of, to soils, ii. 305.
 * Cereus, ii. 38.
 * Cereus speciosissimus and phyllanthus, reversion in hybrids of, i. 392.
 * Cervus canadensis, ii. 158.
 * Cervus dama, ii. 120.
 * , correlation of dermal system and teeth in the, ii. 328.
 * , cats of, i. 46;
 * pigeon-fancying in, i. 206.
 * Chamærops humilis, crossed with date palm, i. 399.
 * , on seeding bread-fruit, ii. 168.
 * islands, breeds of cattle in, i. 80.
 * , Professor, peach-trees producing nectarines, i. 341.
 * , sexual peculiarities in pigeons, i. 162, ii. 74;
 * effect produced by first male upon the subsequent progeny of the female, i. 405;
 * sterility of the union of some pigeons, ii. 162.
 * , fixity of, ii. 239;
 * latent, ii. 51-56, 399-400;
 * continued divergence of, ii. 241;
 * antagonistic, ii. 401.
 * , abundance of pigeons in Persia, i. 205.
 * , orders as to the selection of stallions, ii. 203.
 * , wild cattle of, i. 84.
 * , reversion of the upper seeds in the pods of stocks, ii. 347-348.
 * , on Ranunculus ficaria, ii. 170.
 * , Mr., crossed varieties of cabbage, ii. 130.
 * , general sterility of, in captivity, ii. 151.
 * Cheiranthus cheiri, i. 382.
 * , i. 347-348;
 * bud-variation in, i. 375;
 * white Tartarian, ii. 230;
 * variety of, with curled petals, ii. 232;
 * period of vegetation of, changed by forcing, ii. 311.
 * , on crossing fruit-trees, ii. 129.
 * , differences in characters of, i. 249-250;
 * white, liable to gapes, ii. 228, 336.
 * , ii. 275.
 * , sheep of, i. 95.
 * cattle, identical with Bos primigenius, i. 81;
 * characters of, i. 83-84.
 * , half-castes of, ii. 46.
 * , cats of, with drooping ears, i. 47;
 * horses of, i. 53;
 * striped ponies of, i. 59;
 * asses of, i. 62;
 * notice of rabbits in, by Confucius, i. 103;
 * breeds of pigeons reared in, i. 206;
 * breeds of fowls of, in fifteenth century, i. 232, 247;
 * goose of, i. 237.
 * , fertility of, in captivity, ii. 152.
 * , selection practised by the, ii. 204-205;
 * preference of the, for hornless rams, ii. 209;
 * recognition of the value of native breeds by the, ii. 313.
 * , or Himalayan rabbit, i. 108.
 * "," a breed of cattle in Paraguay, i. 89.
 * , i. 323.
 * , on the plants of the Swiss Lake-dwellings, i. 309, 318;
 * intermediate forms between Pinus sylvestris and montana, i. 363.
 * , i. 379.
 * Chrysotis festiva, ii. 280.
 * , effects of selection on the, ii. 200.
 * , horses of, ii. 102.
 * , ii. 23.
 * , metagenesis in, ii. 366.
 * Cistus, intercrossing and hybrids of, i. 336, 389, ii. 140.
 * Cistus tricuspis, bud-variation in, i. 377.
 * , i. 334-335.
 * "Citrus aurantium fructu variabili," i. 336.
 * Citrus decumana, i. 335.
 * Citrus lemonum, i. 336.
 * Citrus medica, i. 335-336.
 * palate, inheritance of, ii. 24.
 * , on wild vines in Spain, i. 332.
 * , on the St. Valery apple, i. 401.
 * , bud-variation in the hawthorn, i. 377.
 * "," i. 138.
 * "" (pigeons), i. 156.
 * , on the wild dogs of Juan de Nova, i. 27;
 * on striped Burmese and Javanese ponies, i. 59;
 * breeds of goats imported into the Mauritius, i. 101;
 * variations in the mammæ of goats, i. 102;
 * bilobed scrotum of Muscat goat, ibid.
 * , on fission and gemmation, ii. 359.
 * , intercrossing of strawberries, i. 352.
 * , hybridisation of stocks, i. 399, ii. 93.
 * , Mr., prize-cultivation of the gooseberry, i. 355.
 * , explained by the theory of natural selection, i. 11.
 * , effect of, upon breeds of dogs, i. 37;
 * on horses, i. 52, 53;
 * on cattle, i. 91, 92;
 * on the fleece of sheep, i. 98, 99;
 * on seeds of wheat, i. 316;
 * on cultivated cabbages, i. 325;
 * adaptation of maize to, i. 322.
 * and pasture, adaptation of breeds of sheep to, i. 96-97.
 * and soil, effects of, upon strawberries, i. 353.
 * , Mr., on the skull in horned and hornless rams, ii. 333.
 * , on sterility in Ranunculus ficaria, ii. 170.
 * , hybrids of various trees, ii. 130.
 * , pelorism in, ii. 340.
 * , Mr., on interbreeding pigs, ii. 122.
 * of apple trees, ii. 231.
 * fowls, i. 227, 250, 252, 260-261;
 * occipital foramen of, figured, i. 261;
 * section of skull of, figured, i. 263;
 * cervical vertebra of, figured, i. 267.
 * , persistence of, ii. 236;
 * preference of, for a particular cactus, ii. 275.
 * Cochlearia armoracia, ii. 170.
 * , game, natural selection in, ii. 225;
 * spur of, grafted on the comb, ii. 296;
 * spur of, inserted into the eye of an ox, ii. 369;
 * effect of castration upon the, ii. 51-52.
 * , varieties of the, i. 365.
 * , of silkworms, variations in, i. 302-303.
 * , bulldog, i. 89;
 * number of eggs in the, ii. 379.
 * Cœlogenys paca, ii. 152.
 * , prepotency of the ass over the horse, ii. 67-68;
 * on cross-breeding, ii. 97;
 * on change of diet, ii. 304.
 * , Peter, peach-tree producing a nectarine, i. 340.
 * , in pigeons, an evidence of unity of descent, i. 195-197.
 * , correlation of, in dogs, i. 28-29;
 * persistence of, in horses, i. 50;
 * inheritance and diversity of, in horses, i. 55;
 * variations of, in the ass, i. 62-63;
 * of wild or feral cattle, i. 85;
 * transmission of, in rabbits, i. 107;
 * peculiarities of, in Himalayan rabbits, i. 111;
 * influence of, ii. 227-230;
 * correlation of, in head and limbs, ii. 324;
 * correlated with constitutional peculiarities, ii. 335-338.
 * and odour, correlation of, ii. 325.
 * , hereditary, ii. 9;
 * more common in men than in women, ii. 72-73;
 * associated with inability to distinguish musical sounds, ii. 328.
 * , sometimes not blended by crossing, ii. 92.
 * Columba affinis, Blyth, a variety of C. livia, i. 183.
 * Columba amaliæ, Brehm, a variety of C. livia, i. 183.
 * Columba guinea, i. 182.
 * Columba gymnocyclus, Gray, a form of C. livia, i. 184.
 * Columba gymnophthalmos, hybrids of, with C. œnas, i. 193;
 * with C. maculosa, i. 194.
 * Columba intermedia, Strickland, a variety of C. livia, i. 184.
 * Columba leucocephala, ii. 155.
 * Columba leuconota, i. 182, 195.
 * Columba littoralis, i. 182.
 * Columba livia, ii. 29, 40;
 * the parent of domestic breeds of pigeons, i. 183;
 * measurements of, i. 134;
 * figured, i. 135;
 * skull figured, i. 163;
 * lower jaw figured, i. 164, 168;
 * scapula figured, i. 167.
 * Columba luctuosa, i. 182.
 * Columba migratoria and leucocephala, diminished fertility of, in captivity, ii. 155.
 * Columba œnas, i. 183;
 * crossed with common pigeon and C. gymnophthalmos, i. 193.
 * Columba palumbus, i. 193, ii. 350.
 * Columba rupestris, i. 182, 184, 195.
 * Columba Schimperi, i. 184.
 * Columba torquatrix, ii. 350.
 * Columba turricola, i. 184.
 * , cattle of, i. 88.
 * , double, i. 365, ii. 330.
 * , on West Indian dogs, i. 23.
 * , on Italian shepherd's dogs, i. 23;
 * on domestic fowls, i. 231, 247, ii. 202, 429;
 * on the keeping of ducks, i. 277;
 * on the selection of seed-corn, i. 318;
 * on the benefits of change of soil to plants, ii. 146;
 * on the value of native breeds, ii. 313.
 * , i. 325.
 * , in fowls, variations of, i. 253-254;
 * sometimes rudimentary, ii. 315.
 * , law of, i. 274.
 * of growth, ii. 342-344.
 * , connexion of, with constitution, ii. 335.
 * , double flowers of, i. 365, ii. 167, 316.
 * , earlier in Alderney and Zetland cows than in other breeds, i. 87.
 * of life, changed, effect of, ii. 418-419;
 * on horses, i. 52;
 * upon variation in pigeons, i. 212-213;
 * upon wheat, i. 315-316;
 * upon trees, i. 361;
 * in producing bud-variation, i. 408;
 * advantages of, ii. 145-148, 176-177;
 * sterility caused by, ii. 148-165;
 * conducive to variability, ii. 255-261, 394;
 * accumulative action of, ii. 261-263;
 * direct action of, ii. 271-292.
 * , breeding in captivity, ii. 154.
 * , effect of, upon the cock, ii. 52.
 * , on the breeding of rabbits in China, i. 103.
 * , Mr., on Angora goats, ii. 326.
 * differences in sheep, i. 96-97;
 * in varieties of apples, i. 349-350;
 * in pelargoniums, i. 364;
 * in dahlias, i. 370.
 * peculiarities in strawberries, i. 353;
 * in roses, i. 367.
 * , hereditary, ii. 8;
 * period of appearance of, ii. 77;
 * correlated with complexion, ii. 335.
 * , ii. 165-166.
 * Convolvulus batatas, ii. 169, 309.
 * Convolvulus tricolor, bud-variation in, i. 408.
 * , Mr., improvement of vegetables by selection, ii. 204.
 * , White, hereditary peculiarities of vision, ii. 9;
 * association of affections of the eyes with those of other systems, ii. 328.
 * , bud-variation in, i. 374;
 * non-diffusion of cell-gemmules in, ii. 379.
 * . See Boitard.
 * , opacity of, inherited, ii. 9.
 * Cornus mascula, yellow-fruited, ii. 19.
 * , ii. 319;
 * of neighbouring parts, ii. 320;
 * of change in the whole body and in some of its parts, ii. 321;
 * of homologous parts, ii. 322-331;
 * inexplicable, ii. 331-333;
 * commingling of, with the effects of other agencies, ii. 333-335.
 * of skull and limbs in swine, i. 73;
 * of tusks and bristles in swine, i. 76;
 * of multiplicity of horns and coarseness of wool in sheep, i. 95;
 * of beak and feet in pigeons, i. 172-173;
 * between nestling down and colour of plumage in pigeons, i. 194;
 * of changes in silkworms, i. 304;
 * in plants, ii. 219;
 * in maize, i. 323;
 * in pigeons, i. 167-171, 218;
 * in fowls, i. 274-275.
 * periods, inheritance at, ii. 75-80.
 * , dwarf cattle of, i. 89.
 * , Mr., influence of selection on pigs, ii. 198.
 * , ponies of, i. 52.
 * "" (pigeon) of Aldrovandi, i. 209.
 * Corvus corone and C. cornix, hybrids of, ii. 94.
 * Corydalis, flower of, ii. 304.
 * Corydalis cava, ii. 132-133.
 * Corydalis solida, sterile when peloric, ii. 167.
 * Corydalis tuberosa, peloric by reversion, ii. 58-59.
 * Corylus avellana, i. 357.
 * , on shells transferred from England to the Mediterranean, ii. 280.
 * "," i. 323.
 * , inheritance of loss of one horn in the, ii. 12, 23;
 * amount of milk furnished by the, ii. 300;
 * development of six mammæ in, ii. 317.
 * , ii. 21, 182.
 * , sterility of the, in captivity, ii. 156.
 * , fertility of, in captivity, ii. 156.
 * Cratægus oxyacantha, i. 363, ii. 18, 232, 258, 377.
 * Cratægus monogyna, i. 364.
 * Cratægus sibirica, i. 364.
 * , Malasian cats, i. 47;
 * horses of the Malay Archipelago, i. 49;
 * horses of Japan, i. 53;
 * occurrence of stripes in young wild pigs of Malacca, i. 76;
 * on a Burmese hairy family with deficient teeth, ii. 77, 327;
 * Japanese origin of the bantam, i. 230;
 * game fowls of the Philippine islands, i. 232;
 * hybrids of Gallus varius and domestic fowl, i. 234;
 * domestication of Gallus bankiva, i. 236;
 * feral fowls in the Pellew islands, i. 238;
 * history of the fowl, i. 246;
 * history of the domestic duck, i. 277;
 * domestication of the goose, i. 287;
 * cultivated plants of New Zealand, i. 312;
 * breeding of tame elephants in Ava, ii. 150;
 * sterility of Goura coronata in confinement, ii. 155;
 * geese of the Philippine islands, ii. 162.
 * , a breed of fowls, i. 230.
 * fowl, i. 227;
 * figured, i. 229.
 * "," a French sub-breed of fowls, i. 229.
 * , Dr., on the brains of the hare and rabbit, i. 126.
 * , singular form of Begonia frigida, i. 365-366, ii. 166;
 * sterility in Ranunculus ficaria, ii. 170.
 * , ii. 165.
 * , permanent effect of, on the female, i. 404.
 * , ii. 85-144, 173-192;
 * a cause of uniformity, ii. 85-90, 173;
 * occurs in all organised beings, ii. 90-92;
 * some characters not blended by, ii. 92-95, 173;
 * modifications and new races produced by, ii. 95-99;
 * causes which check, ii. 100-109;
 * domestication and cultivation favourable to, ii. 109-113, 189;
 * beneficial effects of, ii. 114-131, 174-176;
 * necessary in some plants, ii. 131-140, 175-176, 423;
 * summary of subject of, ii. 140-144;
 * of dogs with wolves in North America, i. 21-22;
 * with Canis cancrivorus in Guiana, i. 23;
 * of dog with wolf, described by Pliny and others, i. 24;
 * characters furnished by, brought out by reversion in the progeny, ii. 34-36;
 * a direct cause of reversion, ii. 39-47, 48;
 * a cause of variability, ii. 264-267.
 * , macrourous, differences in the development of the, ii. 368.
 * with an antenna-like development of the eye-peduncle, ii. 391.
 * plants, bud-variation in, i. 383.
 * , wild dogs of, i. 27.
 * "," sub-breeds of fowls, i. 244.
 * , variation in number of carpels of, i. 359;
 * supposed crossing of varieties of the, i. 400.
 * Cucumis momordica, i. 360.
 * Cucumis sativa, i. 359.
 * Cucurbita, dwarf, correlation of leaves in, ii. 330.
 * Cucurbita maxima, i. 357, 359.
 * Cucurbita moschata, i. 357, 359.
 * Cucurbita pepo, i. 357, ii. 108;
 * varieties of, i. 358;
 * relation in size and number of fruit of, ii. 343.
 * , i. 357-360;
 * supposed crossing of, i. 399;
 * Naudin's observations on hybrids of, ii. 172;
 * acclimatisation of, ii. 313.
 * "" (pigeons), i. 150.
 * of plants, origin of, among savages, i. 309-310;
 * fertility increased by, ii. 111-113.
 * , on hereditary night-blindness, ii. 9.
 * , of Tierra del Fuego, i. 309;
 * bud-variation in, i. 376.
 * , Mr., bud-variation in the rose, i. 381.
 * , on the gestation of the wolf, i. 29;
 * the odour of the jackal, an obstacle to domestication, i. 30;
 * differences of the skull in dogs, i. 34;
 * external characters of dogs, i. 35;
 * elongation of the intestines in domestic pigs, i. 73, ii. 303;
 * fertility of the hook-billed duck, i. 277;
 * number of digits, ii. 13;
 * hybrid of ass and zebra, ii. 42;
 * breeding of animals in the Jardin des Plantes, ii. 149;
 * sterility of predaceous birds in captivity, ii. 154;
 * facility of hybridisation in confinement, ii. 160.
 * , affection of fingers in, ii. 332.
 * , bud-variation in, i. 382.
 * Cynara cardunculus, ii. 34.
 * Cynips fecundatrix, ii. 283.
 * Cynocephalus hamadryas, ii. 153.
 * Cyprinus auratus, i. 296-297.
 * Cyrtanthus, ii. 139.
 * Cyrtopodium, ii. 134.
 * Cytisus Adami, ii. 364;
 * its bud-variation, i. 387-389, 406, ii. 37;
 * seedlings from, i. 388;
 * different views of its origin, i. 389-390;
 * experiments in crossing C. purpureus and laburnum to produce, i. 389;
 * its production by M. Adam, i. 390;
 * discussion of origin of, i. 396.
 * Cytisus alpino-laburnum, ovules and pollen of, i. 389;
 * origin of, i. 390.
 * Cytisus alpinus, i. 388.
 * Cytisus laburnum, i. 387, 389, 390, 396.
 * Cytisus purpureo-elongatus, ovules and pollen of, i. 389;
 * production of, i. 390.
 * Cytisus purpureus, i. 387, 388, 389, 390, 396.

 * , effects of food on hymenoptera, ii. 281.
 * , i. 369-370, ii. 147;
 * bud-variation by tubers in the, i. 385;
 * improvement of, by selection, ii. 216;
 * steps in cultivation of, ii. 261;
 * effect of conditions of life on, ii. 273;
 * correlation of form and colour in, ii. 331.
 * , hen and chicken, i. 365;
 * Swan River, ii. 261.
 * , varieties of wheat, i. 314.
 * , changes in the odours of plants, ii. 274.
 * , Dr., on consanguineous marriages, ii. 122.
 * , hereditary, ii. 9.
 * , cattle of, i. 88, ii. 207-208.
 * , i. 347.
 * , Count, on silkworms, i. 301.
 * , fertility of English dogs in Sierra Leone, ii. 161.
 * Middens, remains of dogs in, i. 18.
 * in horses, asses, and hybrids, i. 55.
 * , on the skull of the Polish fowl, i. 262;
 * on the production of monstrous chickens, ii. 289;
 * co-existence of anomalies, ii. 331;
 * production of double monsters, ii. 340.
 * , Mr., heredity of good qualities in horses, ii. 11.
 * , on Lepus magellanicus, i. 112;
 * on the wild potato, i. 330;
 * dimorphism in the polyanthus and primrose, ii. 21.
 * , Dr., improvement of vegetables by selection, ii. 204.
 * , Sir F., wildness of crossed pigs, ii. 45.
 * , monogynous condition of the hawthorn in Spain, i. 364.
 * Dasyprocta aguti, ii. 152.
 * Date-palm, varieties of the, ii. 256;
 * effect of pollen of, upon the fruit of Chamærops, i. 299.
 * Datura, ii. 38;
 * variability in, ii. 266.
 * Datura lævis and stramonium, reversion in hybrids of, i. 392.
 * Datura stramonium, ii. 67.
 * , variations in the number of mammæ in dogs, i. 35;
 * proportions of intestines in wild and domestic cats, i. 48, ii. 302.
 * , on white rabbits, ii. 230.
 * , Dr., on sheep in the West Indies, i. 98.
 * and Sandford, early domestication of Bos longifrons in Britain, i. 81.
 * , non-heredity of, ii. 22.
 * , inheritance of, ii. 78.
 * , wild hybrids of common and musk ducks, ii. 46.
 * , Alph., number and origin of cultivated plants, i. 306-307, 371;
 * regions which have furnished no useful plants, i. 310;
 * wild wheat, i. 312-313;
 * wild rye and oats, i. 313;
 * antiquity of varieties of wheat, i. 316;
 * apparent inefficacy of selection in wheat, i. 318;
 * origin and cultivation of maize, i. 320, ii. 307;
 * colours of seeds of maize, i. 321;
 * varieties and origin of the cabbage, i. 324-325;
 * origin of the garden-pea, i. 326;
 * on the vine, i. 332, ii. 308;
 * cultivated species of the orange group, i. 335;
 * probable Chinese origin of the peach, i. 337;
 * on the peach and nectarine, i. 340, 342;
 * varieties of the peach, i. 342;
 * origin of the apricot, i. 344;
 * origin and varieties of the plum, i. 345;
 * origin of the cherry, i. 347;
 * varieties of the gooseberry, i. 354;
 * selection practised with forest-trees, i. 361;
 * wild fastigate oak, i. 361;
 * dark-leaved varieties of trees, i. 362;
 * conversion of stamens into pistils in the poppy, i. 365;
 * variegated foliage, i. 366;
 * heredity of white hyacinths, i. 371, ii. 20;
 * changes in oaks dependent on age, i. 387;
 * inheritance of anomalous characters, ii. 19;
 * variation of plants in their native countries, ii. 256;
 * deciduous bushes becoming evergreen in hot climates, ii. 305;
 * antiquity of races of plants, ii. 429.
 * , non-variability of monotypic genera, ii. 266;
 * relative development of root and seed in Raphanus sativus, ii. 343.
 * , on the cultivation of the wild carrot, i. 326;
 * varieties of the pear, i. 350;
 * inter-crossing of strawberries, i. 351;
 * fruit of the apple, i. 401;
 * sterility of Lysimachia nummularia, ii. 170;
 * tender variety of the peach, ii. 308.
 * , assumption of horns by female, ii. 51;
 * imperfect development of horns in a, on a voyage, ii. 158.
 * , fallow, ii. 103.
 * . Scotch, difference in size of the sexes of, ii. 73;
 * deterioration of, ii. 121.
 * of high-bred races, under neglect, ii. 239.
 * , on strawberries, i. 352, ii. 243;
 * soft-barked pears, ii. 231;
 * on accumulative variation, ii. 262;
 * resistance of blossoms to frost, ii. 306.
 * , on rabbits, i. 107, 112.
 * Delphinium ajacis, ii. 21.
 * Delphinium consolida, ii. 20-21.
 * Dendrocygna viduata, i. 182, ii. 157.
 * , variations of, in the horse, i. 50.
 * , i. 364.
 * , distribution of white on dogs, i. 29;
 * cat from the Cape of Good Hope, i. 47;
 * cats of Madagascar, i. 47;
 * occurrence of striped young in Turkish pigs, i. 76;
 * French breeds of cattle, i. 80;
 * horns of goats, i. 102;
 * on hornless goats, ii. 315.
 * , on the Anglo-Saxon race in America, ii. 276.
 * , number of varieties of roses, i. 367.
 * , Dr., singular case of albinism, ii. 17;
 * on the marriage of cousins, ii. 122;
 * on the effects of close interbreeding, ii. 143, 263.
 * and metamorphosis, ii. 388-389.
 * , arrests of, ii. 315-318.
 * , embryonic, ii. 366-368.
 * -Saint-Denys, L., on the ya-mi, or imperial rice of the Chinese, ii. 205.
 * , fertility of the, in captivity, ii. 151.
 * , occurrence of, in three brothers, ii. 17.
 * Dianthus, contabescent plants of, ii. 165-166;
 * hybrid varieties of, ii. 267.
 * Dianthus armeria and deltoides, hybrids of, ii. 98.
 * Dianthus barbatus, i. 381.
 * Dianthus caryophyllus, i. 381.
 * Dianthus japonicus, contabescence of female organs in, ii. 166.
 * plants, ii. 90.
 * , Mr., on "running" in carnations, i. 381;
 * on the colours of tulips, i. 386.
 * Dicotyles torquatus and labiatus, ii. 150.
 * , dog of New Zealand, i. 26;
 * feral cats in New Zealand, i. 47;
 * polydactylism in Polynesia, ii. 14.
 * Dielytra, ii. 59.
 * , change of, ii. 303-304.
 * Digitalis, properties of, affected by culture, ii. 274;
 * poison of, ii. 380.
 * , supernumerary, ii. 57;
 * analogy of, with embryonic conditions, ii. 16;
 * fusion of, ii. 341.
 * plants, ii. 166;
 * conditions of reproduction in, ii. 181-184.
 * , reciprocal, ii. 90.
 * , i. 25;
 * variation of, in colour, i. 28;
 * half-bred, attempting to burrow, i. 28;
 * attraction of foxes by a female, i. 31;
 * variations of, in confinement, ii. 263.
 * of strawberries, i. 353.
 * , inheritance of, ii. 7-8;
 * family uniformity of, ii. 57;
 * inherited at corresponding periods of life, ii. 77-80;
 * peculiar to localities and climates, ii. 276;
 * obscure correlations in, ii. 331-332;
 * affecting certain parts of the body, ii. 380;
 * occurring in alternate generations, ii. 401.
 * , fatal to white terriers, ii. 227.
 * and use of parts, effects of, ii. 295-303, 352-353, 418-419;
 * in the skeleton of rabbits, i. 124-128;
 * in pigeons, i. 171-177;
 * in fowls, i. 270-274;
 * in ducks, i. 284-286;
 * in the silk-moth, i. 300-304.
 * , influence of, in producing breeds of pigeons, i. 220.
 * , on the musk duck, i. 182;
 * on feral ducks, i. 190;
 * on feral pigeons in Norfolk Island, i. 190;
 * crossing of pigeons, i. 192;
 * origin of domestic fowls, i. 230;
 * crossing of Gallus Sonneratii and common fowl, i. 234;
 * occurrence of white in the young chicks of black fowls, i. 244;
 * Paduan fowl of Aldrovandi, i. 247;
 * peculiarities of the eggs of fowls, i. 248;
 * chickens, i. 249-250;
 * late development of the tail in Cochin cocks, i. 250;
 * comb of lark-crested fowls, i. 256;
 * development of webs in Polish fowls, i. 259;
 * on the voice of fowls, i. 259;
 * origin of the duck, i. 277;
 * ducks kept by the Romans, i. 278;
 * domestication of the goose, i. 287;
 * gander frequently white, i. 288;
 * breeds of turkeys, i. 293;
 * incubatory instinct of mongrels of non-sitting races of fowls, ii. 44;
 * aversion of the dove-cot pigeon to pair with fancy birds, ii. 103;
 * fertility of the goose, ii. 112;
 * general sterility of the guans in captivity, ii. 156;
 * fertility of geese in captivity, ii. 157;
 * white peafowl, ii. 332.
 * , inheritance of anomalies of the extremities, ii. 14;
 * non-reversion to a malformation, ii. 36.
 * , abhorrence of incest by the Abipones, ii. 123.
 * , origin of, i. 15;
 * ancient breeds of, i. 17, ii. 429;
 * of neolithic, bronze and iron periods in Europe, i. 18-19, ii. 427;
 * resemblance of to various species of canidæ, i. 21;
 * of North America compared with wolves, i. 21-22;
 * of the West Indies, South America, and Mexico, i. 23, 31;
 * of Guiana, i. 23;
 * naked dogs of Paraguay and Peru, ibid. and 31;
 * dumb, on Juan Fernandez, i. 27;
 * of Juan de Nova, i. 27;
 * of La Plata, i. 27;
 * of Cuba, i. 27;
 * of St. Domingo, i. 28;
 * correlation of colour in, i. 28-29;
 * gestation of, i. 29-30;
 * hairless Turkish, i. 30, ii. 227;
 * inter-crossing of different breeds of, i. 31;
 * characters of different breeds of, discussed, i. 34-37;
 * degeneration of European, in warm climates, i. 36, 38; ii. 278, 305;
 * liability to certain diseases in different breeds of, i. 36 and note;
 * causes of differences of breeds discussed, i. 37-43;
 * catching fish and crabs in New Guinea and Tierra del Fuego, i. 39;
 * webbing of the feet in, i. 39;
 * influence of selection in producing different breeds of, i. 39, 43;
 * retention of original habits by, i. 182;
 * inheritance of polydactylism in, ii. 14;
 * feral, ii. 33;
 * reversion in fourth generation of, ii. 34;
 * of the Pacific Islands, ii. 87, 220, 303;
 * mongrel, ii. 92-93;
 * comparative facility of crossing different breeds of, ii. 102;
 * fertility of, ii. 111, 151;
 * inter-breeding of, ii. 120-121;
 * selection of, among the Greeks, ii. 202, 209;
 * among savages, ii. 206-207;
 * unconscious selection of, ii. 211-212;
 * valued by the Fuegians, ii. 215;
 * climatal changes in hair of, ii. 278;
 * production of drooping ears in, ii. 301;
 * rejection of bones of game by, ii. 303;
 * inheritance of rudiments of limbs in, ii. 315;
 * development of fifth toe in, ii. 317;
 * hairless, deficiency of teeth in, ii. 326;
 * short-faced, teeth of, ii. 345;
 * probable analogous variation in, ii. 349;
 * extinction of breeds of, ii. 425.
 * , on the auricula, ii. 346-347.
 * , essential points in, ii. 405-406;
 * favourable to crossing, ii. 109-110;
 * fertility increased by, ii. 111-113, 174.
 * animals, origin of, ii. 160-161;
 * occasional sterility of, under changed conditions, ii. 161-162.
 * , Dr., hereditary hypermetropia, ii. 8.
 * fowl, i. 227, 261;
 * furcula of, figured, i. 268.
 * , ii. 152.
 * , ii. 167-168, 171-172;
 * produced by selection, ii. 200.
 * , cultivation of the filbert pine strawberry, i. 354.
 * , crossing of white and black game-fowls, ii. 92.
 * , Mr., wild varieties of the hickory, i. 310;
 * peaches and nectarines from seed, i. 339-340;
 * origin of the Boston nectarine, i. 340;
 * American varieties of the peach, i. 343;
 * North American apricot, i. 344;
 * varieties of the plum, i. 346;
 * origin and varieties of the cherry, i. 347-348;
 * "twin cluster pippins," i. 349;
 * varieties of the apple, i. 350;
 * on strawberries, i. 351, 353;
 * fruit of the wild gooseberry, i. 355;
 * effects of grafting upon the seed, ii. 26;
 * diseases of plum and peach trees, ii. 227-228;
 * injury done to stone fruit in America by the "weevil," ii. 231;
 * grafts of the plum and peach, ii. 259;
 * wild varieties of pears, ii. 260;
 * varieties of fruit-trees suitable to different climates, ii. 306.
 * Draba sylvestris, ii. 163.
 * , pigeon, i. 139, 141.
 * "" (pigeon), i. 156.
 * , effects of, in different climates, ii. 289.
 * , selection of, ii. 205-206.
 * , Mr., inter-breeding of pigs, ii. 121.
 * , fruit-trees in West Africa, i. 309.
 * on Fragaria vesca, i. 351, 352, 353.
 * , Léon, on Cecidomyia and Misocampus, i. 5.
 * , musk, retention of perching habit by the, i. 182;
 * feral hybrid of, i. 190.
 * , penguin, hybrid of, with Egyptian goose, ii. 68.
 * , wild, difficulty of rearing, ii. 233;
 * effects of domestication on, ii. 278.
 * , breeds of, i. 276-277;
 * origin of, i. 277;
 * history of, ibid.;
 * wild, easily tamed, i. 278-279;
 * fertility of breeds of, when crossed, i. 279;
 * with the plumage of Anas boschas, i. 280;
 * Malayan penguin, identical in plumage with English, i. 280;
 * characters of the breeds of, i. 281-284;
 * eggs of, i. 281;
 * effects of use and disuse in, i. 284-286, ii. 298;
 * feral, in Norfolk, i. 190;
 * Aylesbury, inheritance of early hatching by, ii. 25;
 * reversion in, produced by crossing, ii. 40;
 * wildness of half-bred wild, ii. 45;
 * hybrids of, with the musk duck, ii. 45-46;
 * assumption of male plumage by, ii. 51;
 * crossing of Labrador and penguin, ii. 97;
 * increased fertility of, by domestication, ii. 112;
 * general fertility of, in confinement, ii. 157;
 * increase of size of, by care in breeding, ii. 199;
 * change produced by domestication in, ii. 262.
 * , Aug., breeding of Siredon in the branchiferous stage, ii. 384.
 * -coloured horses, origin of, i. 59.
 * de la Malle, feral pigs in Louisiana, ii. 33;
 * feral fowls in Africa, ibid.;
 * bud-variation in the pear, i. 376;
 * production of mules among the Romans, ii. 110.
 * Dusicyon sylvestris, i. 23.
 * rabbit, i. 107.
 * roller pigeon, i. 151.
 * , pelorism in the laburnum, ii. 346.
 * , growth of pears in woods in France, ii. 260.
 * -Jouve, on Leersia oryzoides, ii. 91.
 * , self-impotence in Lilium candidum, ii. 137.
 * , variability in the characters and habits of bees, i. 298.

 * , Dr., on colour-blindness, ii. 72, 328.
 * , of fancy rabbits, i. 106;
 * deficiency of, in breeds of rabbits, i. 108;
 * rudimentary, in Chinese sheep, ii. 315;
 * drooping, ii. 301;
 * fusion of, ii. 341.
 * , on fancy pigeons, i. 148, 153;
 * variability of characters in breeds of pigeons, i. 161;
 * reversion of crossed pigeons to coloration of Columba livia, i. 198;
 * on pigeon-fancying, i. 206, 215-216;
 * on tumbler-pigeons, i. 209, ii. 242;
 * carrier-pigeon, i. 211;
 * effects of interbreeding on pigeons, ii. 126;
 * properties of pigeons, ii. 197-198;
 * death of short-faced tumblers in the egg, ii. 226;
 * Archangel pigeon, ii. 240.
 * , metagenesis in, ii. 367.
 * Ectopistes, specific difference in number of tail-feathers in, i. 159.
 * Ectopistes migratorius, sterile hybrids of, with Turtur vulgaris, i. 193.
 * , correlation of dermal system and teeth in the, ii. 328.
 * , Mr., use of grass-seeds as food in the Punjab, i. 309.
 * , Dr., on the stomach in Larus argentatus and the raven, ii. 302.
 * and, on English wheat in France, ii. 307.
 * , W. F., absorption of the minority in crossed races, ii. 87.
 * , W. W., occurrence of stripes in a nearly thoroughbred horse, i. 57;
 * in foals of racehorses, i. 59.
 * , of fowls, characters of, i. 248;
 * variations of, in ducks, i. 281;
 * of the silkmoth, i. 301.
 * , ancient dogs of, i. 17-18;
 * ancient domestication of the pigeon in, i. 204;
 * absence of the fowl in ancient, i. 246.
 * goose, hybrids of, with penguin duck, i. 282.
 * , Prof., multiple origin of the dog, i. 16;
 * dogs of Lower Egypt, i. 25;
 * mummies of Felis maniculata, i. 43.
 * , male, compared to a premature larva, ii. 384.
 * of the body, functional independence of the, ii. 368-371.
 * , its sterility in captivity, ii. 150.
 * , Irish, correlations in the, ii. 333-334.
 * , Sir Walter, on striped horses, i. 58;
 * Indian domestic and wild swine, i. 66;
 * pigeons from Cairo and Constantinople, i. 132;
 * fantail pigeons, i. 146;
 * Lotan tumbler pigeons, i. 150;
 * a pigeon uttering the sound Yahu, i. 155;
 * Gallus bankiva in Pegu, i. 236.
 * , Mr., varieties of cultivated plants in Tahiti, ii. 256.
 * , nearly evergreen Cornish variety of the, i. 363, ii. 310;
 * foliage-varieties of the, i. 362.
 * , weeping, i. 361;
 * not reproduced by seed, ii. 19.
 * Emberiza passerina, ii. 158.
 * , similarity of, i. 12;
 * fusion of, ii. 339.
 * , on Laurus sassafras, ii. 274.
 * , domestication of Bos longifrons in, i. 81;
 * selection of horses in, in mediæval times, ii. 203;
 * laws against the early slaughter of rams in, ii. 203.
 * , development of the, ii. 366.
 * Epidendrum cinnabarinum and E. zebra, ii. 134.
 * , hereditary, ii. 8, 78.
 * , disease of the white parts of cattle, ii. 337.
 * , frequency of contabescence in the, ii. 165.
 * , an improver of horses by selection, ii. 202.
 * , on the fat-tailed Kirghisian sheep, i. 98, ii. 280;
 * on the dogs of the Ostyaks, ii. 206.
 * Erodium, ii. 59.
 * Erythrina Crista-galli and E. herbacea, hybrids of, ii. 265.
 * , Mr., on the naked young of dun-coloured pigeons, i. 170.
 * dogs, their resemblance to wolves, i. 21;
 * selection of, ii. 206.
 * , on appendages under the jaw of pigs, i. 75-76.
 * Euonymus Japonicus, i. 383.
 * cultivated plants, still wild in Europe, i. 307.
 * , Mr., on the Lotan tumbler pigeon, i. 150.
 * , pansies grown in his garden, i. 368.
 * , on the Newfoundland dog in India, i. 36, ii. 305;
 * degeneration of setters in India, i. 38;
 * Indian wild boars, i. 66.
 * , hornless, ii. 350.
 * of domestic races, i. 221.
 * , hereditary peculiarities of the, ii. 8-10;
 * loss of, causing microphthalmia in children, ii. 24;
 * modification of the structure of, by natural selection, ii. 222-223;
 * fusion of, ii. 341.
 * , hereditary elongation of hairs in, ii. 8.
 * , inherited peculiarities of the, ii. 8.
 * , Mr., on gestation in the dog, i. 30;
 * variability in number of vertebræ in the pig, i. 74;
 * individual sterility, ii. 162.

 * Faba vulgaris, i. 330.
 * , observations on Ægilops triticoides, i. 313.
 * Fagus sylvatica, ii. 19.
 * , Mr., production of double flowers from old seed, ii. 167.
 * Falco albidus, resumption of young plumage by, in captivity, ii. 158.
 * Falco ossifragus, ii. 230.
 * Falco subbuteo, copulating in captivity, ii. 154.
 * Falco tinnunculus, breeding in captivity, ii. 154.
 * , Dr., sterility of English bulldogs in India, i, 38;
 * resemblance between Sivatherium and Niata cattle, i. 89;
 * selection of the silkworm in India, i. 301;
 * fastigate apple-trees in Calcutta, i. 361;
 * reproduction of a supernumerary thumb after amputation, ii. 14;
 * fertility of the dhole in captivity, ii. 151;
 * fertility of English dogs in India, ii. 161;
 * sterility of the tiger in captivity, ii. 151;
 * turkeys at Delhi, ii. 161;
 * on Indian cultivated plants, ii. 165;
 * Thibet mastiff and goat, ii. 278.
 * , sterility of, in captivity, ii. 153.
 * Islands, horses of the, i. 52-53, 61;
 * feral pigs of the, i. 77;
 * feral cattle of the, i. 82, 86;
 * feral rabbits of the, i. 112.
 * deer, ii. 103, 120.
 * pigeons, i. 146-148, ii. 227;
 * figured, i. 147;
 * furcula of, figured, i. 167;
 * history of, i. 208;
 * absence of oil-gland in, ii. 344.
 * Islands, pigeons of the, i. 183.
 * , influence of, in breeding, ii. 240.
 * trees, ii. 277, 348.
 * , geographical differences, of, i. 10.
 * "" bull, ii. 65, 118.
 * , homologous variation in, ii. 325.
 * , of pigeons, individual differences of, i. 160;
 * correlations of external characters in, i. 170-171.
 * and beak, correlation of, in pigeons, i. 171-174.
 * , fertility of, in captivity, ii. 150.
 * Felis bubastes, i. 43.
 * Felis caffra, i. 44.
 * Felis caligulata, i. 43.
 * Felis chaus, i. 43-44.
 * Felis jubata, ii. 151.
 * Felis lybica, i. 44.
 * Felis maniculata, i. 43.
 * Felis manul, i. 45.
 * Felis ornata, i. 45.
 * Felis sylvestris, i. 44.
 * Felis torquata, i. 45.
 * , affected by male element, ii. 365, 387-388.
 * flowers, in male panicle of maize, i. 321.
 * , Italian variety of, i. 326.
 * cats, i. 47;
 * cattle, i. 86;
 * rabbits, i. 111-115;
 * Guinea fowl, i. 294;
 * animals and plants, reversion in, ii. 32-34, 47.
 * , Mr., supposed plurality of origin of domestic fowls, i. 231;
 * chickens of black game-fowls, i. 244;
 * relative size of eggs of fowls, i. 248;
 * yolk of eggs of game-fowls, i. 249;
 * early pugnacity of game-cocks, i. 250;
 * voice of the Malay fowl, i. 259;
 * effects of interbreeding on fowls, ii. 124;
 * selection in Cochin China fowls, ii. 196;
 * on fashion in poultry, ii. 240.
 * , on Mexican dogs, i. 23.
 * , reproduction of abnormal forms of, by spores, i. 383;
 * non-diffusion of cell-gemmules in, ii. 379.
 * , ii. 111, 151, 206.
 * , artificial, of the St. Valery apple, i. 350.
 * , various degrees of, in sheep, i. 97;
 * unlimited mutual, of breeds of pigeons, i. 192-194;
 * comparative of mongrels and hybrids, ii. 100-101, 178-180;
 * influence of nourishment on, ii. 111;
 * diminished by close interbreeding, ii. 118, 175;
 * reduced, of Chillingham wild cattle, ii. 119;
 * of domesticated varieties when crossed, ii. 189.
 * Festuca, species of, propagated by bulblets, ii. 170.
 * , spared by tomtits, ii. 231.
 * , on the breeding of branchiferous tritons, ii. 384.
 * , general sterility of, in captivity, ii. 154.
 * (pigeon), i. 156.
 * , i. 326.
 * , Scotch, acclimatisation of, ii. 310.
 * , Mr., advantage of change of soil to plants, ii. 147.
 * , regeneration of portions of fins of, ii. 15;
 * variability of, when kept in tanks, ii. 259;
 * marine, living in fresh water, ii. 304;
 * double monsters of, ii. 340.
 * and gemmation, ii. 358.
 * , Mr., persistency of a variety of the pea, i. 329.
 * , survival of the, i. 6.
 * , origin of sheep, i. 94;
 * African maned sheep, i. 96.
 * of character, conditions of, discussed, ii. 62-64.
 * , found in the Swiss lake-dwellings, i. 317;
 * climatal difference in products of, ii. 274.
 * , fineness of, in Austrian merinos, ii. 197.
 * , on German sheep crossed with merinos, ii. 88-89.
 * "," i. 142-143.
 * , ii. 53.
 * , crossing of wolf and dog, i. 32;
 * prepotency of the jackal over the dog, ii. 67;
 * hybrids of the horse and ass, ii. 68;
 * breeding of monkeys in Europe, ii. 153.
 * , earliest known, in Europe, ii. 217.
 * , capricious transmission of colour-varieties in, ii. 20-21;
 * tendency to uniformity in striped, ii. 70;
 * scorching of, dependent on colour, ii. 229;
 * change in, caused by conditions of life, ii. 273;
 * rudimentary, ii. 316;
 * relative position of, to the axis, ii. 345.
 * , abdominal, ii. 294.
 * , Mr., wild varieties of pears, ii. 260.
 * , inherited peculiarities of, i. 362;
 * variegation, of, i. 366;
 * bud-variation in, i. 382-384.
 * , influence of, on the pig, i. 72;
 * on cattle, i. 91;
 * excess of, a cause of variability, ii. 257.
 * , on Chilian sheep, i. 95;
 * on the horses of Spain, Chili, and the Pampas, i. 52.
 * Formica rufa, ii. 251.
 * , sterility of the sweet potato in China, ii. 169;
 * development of axillary bulbs in the yam, ibid.
 * , common, breeds of, i. 225-230;
 * supposed plurality of origin, i. 230;
 * early history of, i. 231-233;
 * causes of production of breeds of, i. 233;
 * origin of from Gallus bankiva, i. 236-239, 245;
 * feral, notices of, i. 237-238;
 * reversion and analogous variation in, i. 239-246, ii. 35, 38, 39, 40, 349, 350;
 * "cuckoo" sub-breeds of, i. 244;
 * history of, i. 246-247;
 * structural characters of, i. 247-250;
 * sexual peculiarities of, i. 251-257, ii. 74;
 * external differences of, i. 257-260;
 * differences of breeds of, from G. bankiva, i. 260;
 * osteological characters of, i. 260-270;
 * effects of disuse of parts in, i. 270-274, ii. 298;
 * feral, i. 190, ii. 33;
 * polydactylism in, ii. 14;
 * fertility of, increased by domestication, ii. 112, 167;
 * sterility of, under certain conditions, ii. 162;
 * influence of selection on, ii. 196, 198, 209, 210;
 * evils of close interbreeding of, ii. 124-125;
 * crossing of, ii. 95, 96, 97;
 * prepotency of transmission in, ii. 67;
 * rudimentary organs in, ii. 315;
 * crossing of non-sitting varieties of, ii. 43-44;
 * homology of wing and leg feathers in, ii. 323;
 * hybrids of, with pheasants and Gallus Sonneratii, ii. 45;
 * black-skinned, ii. 209-210;
 * black, preyed upon by the osprey in Iceland, ii. 230;
 * five-toed, mentioned by Columella, ii. 429;
 * rumpless, tailed chickens produced by, ii. 31;
 * Dorking, crosses of, ii. 93;
 * form of comb and colour of plumage in, ii. 238;
 * game, crossing of white and black, ii. 92;
 * five-spurred, ii. 391;
 * Spanish, liable to suffer from frost, ii. 306;
 * Polish, peculiarities of skull of, ii. 332-333.
 * , sterility of, in captivity, ii. 151.
 * , S. Bevan, races of bees, i. 298.
 * , W. Darwin, gestation of the dog, i. 30;
 * "Negro" cat, i. 46;
 * reversion of sheep in colour, ii. 30;
 * period of gestation in the pig, i. 74;
 * young of the Himalayan rabbit, i. 109;
 * crossing of wild and domestic turkeys, i. 292;
 * reversion in crossed musk ducks, ii. 40;
 * spontaneous segregation of varieties of geese, ii. 104;
 * effects of close interbreeding upon bloodhounds, ii. 121;
 * deafness of white cats with blue eyes, ii. 329.
 * , i. 40, ii. 120.
 * Fragaria chiloensis, i. 351.
 * Fragaria collina, i. 351.
 * Fragaria dioica of Duchesne, i. 353.
 * Fragaria elatior, i. 351.
 * Fragaria grandiflora, i. 351.
 * Fragaria vesca, i. 351.
 * Fragaria virginiana, i. 351.
 * Fraxinus excelsior, i. 360, 362, ii. 19.
 * Fraxinus lentiscifolia, ii. 19.
 * cattle, probably descended from Bos primigenius, i. 81.
 * (pigeon), i. 155;
 * Indian, i. 153.
 * Fringilla ciris, ii. 154.
 * Fringilla spinus, ii. 154.
 * fowls, i. 230;
 * horses, i. 54.
 * , polydactylism in the, ii. 14.
 * , seedless, ii. 168.
 * , varieties of, occurring wild, i. 310.
 * , Mr., on fertile hybrid cats, i. 44;
 * on feral fowls in Ascension, i. 238.
 * , origin of, i. 364;
 * bud-variation in, i. 382.
 * Fuchsia coccinea and fulgens, twin seed produced by crossing, i. 391.
 * , their superstition about killing young water-fowl, i. 310;
 * selection of dogs by the, ii. 207;
 * their comparative estimation of dogs and old women, ii. 215;
 * their power of distant vision, ii. 223.
 * , parasitic, ii. 284-285.
 * , characters and variations of the, in pigeons, i. 167;
 * alteration of, by disuse, in pigeons, i. 175;
 * characters of, in fowls, i. 268.
 * of homologous parts, ii. 393.

 * , inheritance of peculiarities of, ii. 6.
 * Archipelago, its peculiar fauna and flora, i. 9.
 * Galeobdolon luteum, pelorism in, ii. 59, 345.
 * , ii. 282-284.
 * , ii. 283.
 * excrescences not inherited, ii. 23.
 * birds, restricted range of large, i. 237;
 * general fertility of in captivity, ii. 155.
 * Gallinula chloropus, ii. 156.
 * Gallinula nesiotis, i. 287.
 * , Mr., fondness of savages for taming animals, i. 20, ii. 160;
 * cattle of Benguela, i. 88;
 * on hereditary talent, ii. 7.
 * , species of oranges, i. 334, 335, 336;
 * hybridisation of oranges, i. 336;
 * persistency of races in the peach, i. 339;
 * supposed specific distinctions of peach and nectarine, i. 340;
 * Bizzaria orange, i. 391;
 * crossing of red and white carnations, i. 393;
 * crossing of the orange and lemon, i. 399, ii. 365;
 * effect of foreign pollen on maize, i. 400;
 * spontaneous crossing of oranges, ii. 91;
 * monstrosities a cause of sterility in plants, ii. 166;
 * seeding of ordinarily seedless fruits, ii. 168;
 * sterility of the sugar cane, ii. 169;
 * tendency of male flowers to become double, ii. 171;
 * effects of selection in enlarging fruit, &c., ii. 217;
 * variation of the orange tree in North Italy, ii. 256;
 * naturalisation of the orange in Italy, ii. 309.
 * Gallus æneus, a hybrid of G. varius and the domestic fowl, i. 235.
 * Gallus bankiva, probable original of domestic fowls, i. 233, 236-239, 245;
 * game-fowl, nearest to, i. 226;
 * crossed with G. Sonneratii, i. 234;
 * its character and habits, i. 235-236, ii. 109;
 * differences of various breeds of fowls from, i. 260;
 * occipital foramen of, figured, i. 261;
 * skull of, figured, i. 262;
 * cervical vertebra of, figured, i. 267;
 * furcula of, figured, i. 268;
 * reversion to, in crossed fowls, ii. 39-40;
 * hybrid of, with G. varius, i. 235, ii. 40;
 * number of eggs of, ii. 112.
 * Gallus ferrugineus, i. 226.
 * Gallus furcatus, i. 234.
 * Gallus giganteus, i. 235.
 * Gallus Sonneratii, characters and habits of, i. 233;
 * hybrids of, i. 234, ii. 45.
 * Gallus Stanleyi, hybrids of, i. 234.
 * Gallus Temminckii, probably a hybrid, i. 235.
 * Gallus varius, character and habits of, i. 234;
 * hybrids and probable hybrids of, i. 234-235.
 * , Lord, his early cultivation of the pansy, i. 368.
 * , i. 226, 250, 251, 252.
 * , ii. 228.
 * de la Vega, annual hunts of the Peruvian Incas, ii. 207.
 * , Mr., migratory propensities of hybrid ducks, ii. 45.
 * , Dr., on hereditary gout, ii. 7.
 * , a genus of pumpkins, founded on stigmatic characters, i. 359.
 * , bud-variation in the pear, i. 376;
 * apple tree with two kinds of fruit on branch, i. 392.
 * , anomalous structure in the feet of horses, i. 50.
 * , on Fragaria grandiflora, i. 351;
 * on Viola lutea and tricolor, i. 368;
 * on the nectary of Viola grandiflora, i. 369.
 * , domestication of the, i. 82.
 * , see Moll.
 * , on the sterility of hybrids, i. 192, ii. 101;
 * acquired sterility of varieties of plants when crossed, i. 358;
 * sterility in transplanted plants, and in the lilac in Germany, ii. 164;
 * mutual sterility of blue and red flowers of the pimpernel, ii. 190;
 * supposed rules of transmission in crossing plants, ii. 68;
 * on crossing plants, ii. 98, 127, 130, 131;
 * on repeated crossing, ii. 267;
 * absorption of one species by another, when crossed, ii. 88;
 * crossing of varieties of the pea, i. 397;
 * crossing maize, ii. 105;
 * crossing of species of Verbascum, ii. 93, 105;
 * reversion in hybrids, ii. 36, 49, 50;
 * of Cereus, i. 392;
 * of Tropæolum majus and minus, i. 392;
 * variability of hybrids, ii. 265;
 * variable hybrids from one variable parent, ii. 270;
 * graft hybrid produced by inosculation in the vine, i. 395;
 * effect produced by grafts on the stock, i. 394, ii. 278;
 * tendency of hybrid plants to produce double flowers, ii. 171;
 * production of perfect fruit by sterile hybrids, ii. 172;
 * sexual elective affinity, ii. 180;
 * self-impotence in Lobelia, Verbascum, Lilium, and Passiflora, ii. 136-137;
 * on the action of pollen, ii. 108;
 * fertilisation of Malva, i. 402-403, ii. 363;
 * prepotency of pollen, ii. 187;
 * prepotency of transmission in species of Nicotiana, ii. 67;
 * bud-variation in Pelargonium zonale, i. 375;
 * in Œnothera biennis, i. 382;
 * in Achillæa millefolium, i. 408;
 * effect of manure on the fertility of plants, ii. 163;
 * on contabescence, ii. 165-166;
 * inheritance of plasticity, ii. 241;
 * villosity of plants, ii. 277.
 * (anseres) general fertility of, in captivity, ii. 157.
 * , on the number of digits, ii. 13.
 * and fission, ii. 358.
 * , or cell-gemmules, ii. 374, 378-381, 384.
 * , fertility of the, in captivity, ii. 151.
 * , alternate, ii. 361, 367, 390.
 * , sexual, ii. 359-364.
 * , inheritance of, ii. 7.
 * Gentiana amarella, ii. 168.
 * Saint-Hilaire, production of monstrous chickens, ii. 289;
 * "Loi de l'affinité de soi pour soi," ii. 339;
 * compensation of growth, ii. 342.
 * Saint-Hilaire, Isid., origin of the dog, i. 66;
 * barking of a jackal, i. 27;
 * period of gestation and odour of the jackal, i. 30;
 * anomalies in the teeth of dogs, i. 34;
 * variations in the proportions of dogs, i. 35;
 * webbed feet of Newfoundland dogs, i. 39;
 * crossing of domestic and wild cats, i. 44;
 * domestication of the arni, i. 82;
 * supposed introduction of cattle into Europe from the East, ibid.;
 * absence of interdigital pits in sheep, i. 95;
 * origin of the goat, i. 101;
 * feral geese, i. 190;
 * ancient history of the fowl, i. 246;
 * skull of the Polish fowl, i. 262;
 * preference of the Romans for the liver of white geese, i. 289;
 * polydactylism, ii. 12;
 * assumption of male characters by female birds, ii. 51;
 * supernumerary mammæ in women, ii. 58;
 * development of a proboscis in the pig, ibid.;
 * transmission and blending of characters in hybrids, ii. 94;
 * refusal of animals to breed in captivity, ii. 149;
 * on the Guinea pig, ii. 152;
 * silkworms producing white cocoons, ii. 199;
 * on the carp, ii. 236;
 * on Helix lactea, ii. 280;
 * on monstrosities, ii. 254;
 * injury to the embryo a cause of monstrosity, ii. 269;
 * alteration in the coat of horses in coal mines, ii. 278;
 * length of the intestines in wild and tame animals, ii. 302-303;
 * inheritance of rudimentary limbs in the dog, ii. 315;
 * correlation in monstrosities, ii. 320;
 * supernumerary digits in man, ii. 322;
 * co-existence of anomalies, ii. 331;
 * fusion of homologous parts, ii. 341-342;
 * presence of hairs and teeth in ovarian tumours, ii. 370;
 * development of teeth on the palate in the horse, ii. 391.
 * differences of faunas, i. 10.
 * succession of organisms, i. 11.
 * Geranium, ii. 59.
 * Geranium phæum and pyrenaicum, ii. 258.
 * Geranium pratense, i. 379.
 * , asserted climatal change in Burgundian bees, i. 297.
 * , on varieties of the hyacinth, i. 370.
 * , on hive-bees, i. 299.
 * , Prof., origin of the dog, i. 16;
 * resemblance of dogs and jackals, i. 24;
 * taming of the jackal, i. 26;
 * number of teeth in dogs, i. 34;
 * breeds of dogs, i. 36;
 * on tertiary horses, i. 51;
 * biblical notices of horses, i. 55;
 * species of Ovis, i. 94;
 * wild and domestic rabbits, i. 103;
 * rabbits from Mount Sinai and Algeria, i. 105;
 * earless rabbits, i. 108;
 * batrachia with doubled limbs, ii. 391.
 * , period of, in the dog, wolf, &c, i. 29-30;
 * in the pig, i. 74;
 * in cattle, i. 87, ii. 321;
 * in sheep, i. 97.
 * , inheritance of peculiarities in, ii. 6.
 * "" a sub-breed of fowls, i. 229.
 * , ii. 42.
 * , Mr., effect of cross-breeding in the pig, i. 404.
 * , co-ordination of structure of, ii. 221.
 * , period of appearance of permanent teeth in dogs, i. 35.
 * de Buzareingues, inheritance in the horse, ii. 10;
 * reversion by age in cattle, ii. 38;
 * prepotency of transmission of character in sheep and cattle, ii. 66;
 * on crossing gourds, ii. 108.
 * , wild cattle at, i. 84.
 * Gladiolus, i. 364;
 * self-impotence of hybrids of, ii. 139.
 * Gladiolus colvillii, bud-variation in, i. 382.
 * , compensatory development of, ii. 300.
 * thorn, i. 364.
 * , Mr., on the Cineraria, ii. 200.
 * , F., on strawberries, i. 353.
 * , on the wings of ducks, ii. 298.
 * "" (pigeon), i. 154.
 * Gloxiniæ, peloric, i. 365, ii. 167.
 * , on red cats, at Tobolsk, i. 47.
 * , i. 101-102, ii. 33;
 * polydactylism in the, ii. 14;
 * sexual differences in horns of, ii. 73;
 * valued by South Africans, ii. 207;
 * Thibet, ii. 278;
 * amount of milk and development of udders in the, ii. 300;
 * hornless, rudimentary bony cores in, ii. 316;
 * Angora, ii. 326.
 * , odour of the hairless Turkish dog, i. 30;
 * differences in the skull of dogs, i. 34;
 * increase of breeds of horses, i. 51;
 * crossing of domestic and wild swine, i. 66;
 * on goats, i. 101-102;
 * colour of the skin in fowls, i. 258;
 * bees of north and south of France, i. 297;
 * introduction of the silkworm into Europe, i. 300;
 * variability in the silkworm, i. 304;
 * supposed species of wheat, i. 312-314;
 * on Ægilops triticoides, i. 313;
 * variable presence of barbs in grasses, i. 314;
 * colours of the seeds of maize, i. 321;
 * unity of character in cabbages, i. 323;
 * correlation of colour and odour, i. 325;
 * effect of heat and moisture on the cabbage, i. 325;
 * on the cultivated species of Brassica, i. 325;
 * on the Rouncival and sugar peas, i. 327;
 * variation in the numbers of peas in the same pod, i. 328;
 * wild vines in Spain, i. 332;
 * on raising peaches from seed, i. 339;
 * supposed specific distinctness of peach and nectarine, i. 340;
 * nectarine producing peaches, i. 341;
 * on the flower of Corydalis, i. 344;
 * origin and variations of the plum, i. 345;
 * origin of the cherry, i. 347;
 * reversion of single-leaved strawberries, i. 353;
 * five-leaved variety of Fragaria collina, i. 353;
 * supposed immutability of specific characters, i. 358-359;
 * varieties of Robinia, i. 361;
 * permanency of the simple-leaved ash, i. 362;
 * non-inheritance of certain mutilations, ii. 23;
 * wild turnips, carrots, and celery, ii. 33;
 * pre-potency of a goat-like ram, ii. 66;
 * benefit of change of soil to plants, ii. 146;
 * fertility of peloric flowers of Corydalis solida, ii. 167;
 * seeding of ordinarily seedless fruit, ii. 168;
 * sexual sterility of plants propagated by buds, &c., ii. 169;
 * increase of sugar in beet-root, ii. 201;
 * effects of selection in enlarging particular parts of plants, ii. 217;
 * growth of the cabbage in the tropics, ii. 277;
 * rejection of bitter almonds by mice, ii. 232;
 * influence of marshy pasture on the fleece of sheep, ii. 278;
 * on the ears of ancient Egyptian pigs, ii. 301;
 * primitive distinctness of species, ii. 415;
 * solid hoofed swine, ii. 429.
 * , on compensation of growth, ii. 342.
 * , i. 296-297, ii. 236.
 * , on South American cats, i. 46.
 * , number of seeds in the, ii. 379.
 * , ancient domestication of, i. 287;
 * sacred to Juno in Rome, ibid.;
 * inflexibility of organisation of, i. 288;
 * skull perforated in tufted, i. 288;
 * characters of breeds and sub-breeds of, i. 288-289;
 * variety of, from Sebastopol, i. 289, ii. 392;
 * feral in La Plata, i. 190;
 * Egyptian, hybrid of, with penguin duck, ii. 68;
 * spontaneous segregation of varieties of, ii. 104;
 * fertility of, increased by domestication, ii. 112;
 * decreased fertility of, in Bogota, ii. 161;
 * sterility of, in the Philippine Islands, ii. 162;
 * selection of, ii. 204;
 * white, preference of the Romans for the liver of, ii. 209;
 * persistency of character in, ii. 254;
 * Egyptian, change in breeding season of, ii. 304.
 * , i. 354-356;
 * bud-variation in the, i. 376;
 * Whitesmith's, ii. 232.
 * , on monstrous poppies, ii. 166.
 * , P. H., feral dogs in Jamaica, i. 28;
 * feral pigs of Jamaica, i. 77-78;
 * feral rabbits of Jamaica, i. 112;
 * on Columba leucocephala, i. 183;
 * feral Guinea fowl in Jamaica, i. 190;
 * reproduction of individual peculiarities by gemmation in a coral, i. 374;
 * frequency of striped legs in mules, ii. 42.
 * , Dr., on hereditary hæmorrhage, ii. 7.
 * , John, origin of the turkey, i. 292.
 * Goura coronata and Victoriæ, hybrids of, i. 194, ii. 155.
 * , i. 357;
 * crossing of varieties of, ii. 108;
 * ancient Peruvian variety of, ii. 429.
 * , inheritance of, ii. 7;
 * period of appearance of, ii. 77.
 * , on the pigeon of the Faroe islands, i. 183.
 * , ii. 147;
 * effects of, ii. 259, 278;
 * upon the stock, i. 394-395;
 * upon the variability of trees, ii. 259;
 * changes analogous to bud-variation produced by, i. 387, 389.
 * , i. 390-391, 394-397, ii. 364-365.
 * , bud-variation in, i. 375;
 * cross of white and purple, i. 393;
 * green, liable to disease, ii. 336;
 * effect of foreign pollen on, i. 400.
 * , seeds of, used as food by savages, i. 307-309.
 * , Asa, superior wild varieties of fruit-trees, i. 310;
 * cultivated native plants of North America, i. 312, 357;
 * non-variation of weeds, i. 317;
 * supposed spontaneous crossing of pumpkins, i. 399;
 * pre-ordination of variation, ii. 432;
 * progeny of husked form of maize, i. 320;
 * wild intermediate forms of strawberries, i. 352.
 * , G. R., on Columba gymnocyclus, i. 184.
 * , J. E., on Sus pliciceps, i. 70;
 * on a variety of the gold-fish, i. 297;
 * hybrids of the ass and zebra, ii. 42-43;
 * on the breeding of animals at Knowsley, ii. 149;
 * on the breeding of birds in captivity, ii. 157.
 * , J. Reay, on the development of the echinodermata, ii. 367.
 * , Mr., on a Canadian web-footed dog, i. 39.
 * , Mr., experiments on Abraxas grossulariata, ii. 280.
 * , Mr., experiments on Abraxas grossulariata, ii. 280.
 * , Sir George, preservation of seed-bearing plants by the Australian savages, i. 310;
 * detestation of incest by Australian savages, ii. 123.
 * , sculptured on Egyptian monuments, and in the Villa of Antoninus, i. 17;
 * modern breed of, i. 41;
 * crossed with the bulldog, by Lord Orford, ii. 95;
 * co-ordination of structure of, due to selection, ii. 221-222;
 * Italian, ii. 227.
 * , inherited at corresponding periods of life, ii. 77.
 * , Mr., on early-flowering dahlias, i. 370.
 * , Mr., acclimatisation of the Scotch fir, ii. 310.
 * , C. O., on the webbed feet of the otter-hound, i. 40.
 * "" (pigeons), i. 137.
 * , Indian, i. 150.
 * , fertility of, in captivity, ii. 156.
 * , hybrids of Ægilops and wheat, ii. 110.
 * Grus montigresia, cinerea, and Antigone, ii. 156.
 * , selection of, ii. 207.
 * , general fertility of, in captivity, ii. 156.
 * , ii. 185.
 * fowls, i. 230.
 * , selection of dogs by the Indians of, ii. 206.
 * , i. 294;
 * feral in Ascension, and Jamaica, i. 190, ii. 33;
 * indifference of to change of climate, ii. 161.
 * pig, ii. 24, 152.
 * , on the jackal, i. 25.
 * , herring, breeding in confinement, ii. 157.
 * , general sterility of, in captivity, ii. 157.
 * Gulo, sterility of, in captivity, ii. 152.
 * , A., on tufted ducks and geese, i. 274;
 * on the regeneration of lost parts in batrachia, ii. 15.
 * , Mr., owls breeding in captivity, ii. 154;
 * appearance of "black-shouldered" among ordinary peacocks, i. 291.

 * , influence of, in acclimatisation, ii. 312-315.
 * , inheritance of, ii. 395.
 * , on cells, ii. 370;
 * on the double reproduction of medusæ, ii. 384;
 * on inheritance, ii. 397.
 * , peculiarities of, in fowls, i. 254.
 * , on the face, inheritance of, in man, ii. 4;
 * peculiar lock of, inherited, ii. 5;
 * growth of, under stimulation of skin, ii. 326;
 * homologous variation of, ii. 325;
 * development of, within the ears and in the brain, ii. 391.
 * and teeth, correlation of, ii. 326-328.
 * family, corresponding period of inheritance in, ii. 77.
 * , character of, ii. 46.
 * rabbits, figured and described, i. 107-108;
 * skull of, i. 119.
 * Haliætus leucocephalus, copulating in captivity, ii. 154.
 * , Col., on a two-legged race of pigs, ii. 4.
 * fowl, i. 227, 261;
 * figured, i. 228.
 * , wild cattle of, i. 84.
 * , Dr., on the assumption of male plumage by the hen pheasant, ii. 51.
 * , F. Buchanan, on the shaddock, i. 335;
 * varieties of Indian cultivated plants, ii. 256.
 * , Mr., sterility of tamed birds, ii. 155-157.
 * , inheritance of peculiarities in, ii. 6.
 * , Sir J., on selection of flower seeds, ii. 204.
 * , Mr., inheritance of dark yolks in duck's eggs, i. 281.
 * , E. V., on the Arab boar-hound, i. 17;
 * aversion of the Arabs to dun-coloured horses, i. 55.
 * , Mr., effect of excess of nourishment on plants, ii. 257.
 * , hybrids of, with rabbit, i. 105;
 * sterility of the, in confinement, ii. 152;
 * preference of, for particular plants, ii. 232.
 * , inheritance of, ii. 24.
 * , Dr., on hereditary diseases, ii. 7.
 * , Mr., on the number of eggs in a codfish, ii. 379.
 * , Mr., monstrous red and white African bull, i. 91.
 * , Prof., singular form of Begonia frigida, i. 365-366;
 * effects of cross-breeding on the female, i. 404;
 * monstrous saxifrage, ii. 166.
 * wheat, i. 313.
 * strawberry, i. 353.
 * , Col., on call or decoy ducks, i. 281.
 * , varieties of, i. 360-364;
 * pyramidal, i. 361;
 * pendulous hybridised, ii. 18;
 * changes of, by age, i. 364, 387;
 * bud-variation in the, i. 377;
 * flower buds of, attacked by bullfinches, ii. 232.
 * , Dr., character of Esquimaux dogs, i. 21-22.
 * , W., on the feral rabbits of Porto Santo, i. 114.
 * , purple-leaved, i. 362, 395, ii. 330.
 * of wild boar and Yorkshire pig, figured, i. 72.
 * and limbs, correlated variability of, ii. 323.
 * , inheritance of, ii. 79.
 * , i. 368-369;
 * change produced in the, by transplantation, i. 386;
 * reversion in, ii. 31, 47;
 * effects of selection on, ii. 200;
 * scorching of, ii. 229;
 * effects of seasonal conditions on the, ii. 274;
 * annual varieties of the, ii. 305.
 * , effect of, upon the fleece of sheep, i. 98.
 * , Bishop, on the breeding of the rhinoceros in captivity, ii. 150.
 * , cattle of the, i. 80;
 * pigeons of the, i. 183.
 * , O., on the plants of the Swiss lake-dwellings, i. 309, ii. 215, 427;
 * on the cereals, i. 317-319;
 * on the peas, i. 326;
 * on the vine growing in Italy in the bronze age, i. 332.
 * Helix lactea, ii. 280.
 * Hemerocallis fulva and flava, interchanging by bud-variation, i. 386.
 * yields no conicine in Scotland, ii. 274.
 * , differences of, in various parts of India, ii. 165;
 * climatal difference in products of, ii. 274.
 * , effect of, upon the colour of birds, ii. 280.
 * flowers, occurrence of, in Maize, i. 321.
 * , assumption of male characters by the, ii. 51, 54;
 * development of spurs in the, ii. 318.
 * "," or hen-like male fowls, i. 252.
 * , T. A., a variety of the ash produced by grafting, i. 394;
 * crossing of species of Rhododendron and Arabis, i. 400.
 * , Prof., individual variation in wheat, i. 314;
 * bud-variation in the Austrian bramble rose, i. 381;
 * partial reproduction of the weeping ash by seed, ii. 19.
 * , changed by transplantation, i. 386.
 * , Dr., variations of Viola grandiflora, i. 368;
 * bud-variation in camellias, i. 377;
 * seedlings from reverted Cytisus Adami, i. 388;
 * crosses of Swedish and other turnips, ii. 93;
 * on hollyhocks, ii. 107;
 * breeding of hybrids, ii. 131;
 * self-impotence in hybrid hippeastrums, ii. 138-139;
 * hybrid Gladiolus, ii. 139;
 * on Zephyranthes candida, ii. 164;
 * fertility of the crocus, ii. 165;
 * on contabescence, ii. 165;
 * hybrid Rhododendron, ii. 265.
 * , figure of a pig found in, i. 67.
 * , Sir R., appearance of "black-shouldered" among ordinary peacocks, i. 290-291;
 * non-inheritance of monstrous characters by goldfish, i. 296;
 * crossing of white and coloured Angora rabbits, ii. 92;
 * crosses of solid-hoofed pigs, ii. 93.
 * Herpestes fasciatus and griseus, ii. 151.
 * , on the sheep of the Tarentino, ii. 227;
 * on correlated constitutional peculiarities, ii. 337.
 * , Mr., reversion in bantam cocks, i. 240;
 * degeneration of silk fowls, i. 243;
 * partial sterility of hen-like male fowls, i. 252;
 * production of tailed chickens by rumpless fowls, i. 259;
 * on taming and rearing wild ducks, i. 278-279, ii. 233, 262-263;
 * conditions of inheritance in laced Sebright bantams, ii. 22;
 * reversion in rumpless fowls, ii. 31;
 * reversion in fowls by age, ii. 39;
 * hybrids of pheasant and fowl, ii. 45, 68;
 * assumption of male characters by female pheasants, ii. 51;
 * development of latent characters in a barren bantam hen, ii. 54;
 * mongrels from the silk-fowl, ii. 67;
 * effects of close interbreeding on fowls, ii. 124-125;
 * on feathered-legged bantams, ii. 323.
 * , Mr., on the pigs of the Shetland Islands, i. 70.
 * cattle, descended from Bos longifrons, i. 81.
 * , Dr., on the fertilisation of Orchideæ, i. 402-403;
 * occasional necessary crossing of plants, ii. 90;
 * on Primula sinensis and Oxalis rosea, ii. 132;
 * on Corydalis cava, ii. 132-133.
 * , R., on the Alco, i. 31;
 * feral rabbits in Jamaica, i. 112;
 * feral peacocks in Jamaica, i. 190;
 * variation of the Guinea fowl in Jamaica, i. 294;
 * sterility of tamed birds in Jamaica, ii. 155, 157.
 * , range of gallinaceous birds in the, i. 237.
 * rabbit, i. 107, 108-111;
 * skull of, i. 120.
 * sheep, i. 95.
 * , Mr., on Chillingham cattle, i. 84.
 * "," i. 142-143.
 * and mule, difference of, ii. 67-68.
 * Hipparion, anomalous resemblance to in horses, i. 50.
 * Hippeastrum, hybrids of, ii. 138-139.
 * , ancient domestication of, i. 297;
 * breeds of, i. 298;
 * smaller when produced in old combs, i. 297;
 * variability in, i. 298;
 * crossing of Ligurian and common, i. 299.
 * "," i. 141.
 * , Fisher, on interbreeding pigs, ii. 121.
 * , Dr., on the attraction of foxes by a female Dingo, i. 31;
 * origin of the Newfoundland dog, i. 42;
 * transmission of a peculiar lock of hair, ii. 5.
 * , Mr., domestication of Canis primævus, i. 26;
 * development of a fifth digit in Thibet mastiffs, i. 35;
 * number of ribs in humped cattle, i. 79;
 * on the sheep of the Himalaya, i. 95;
 * presence of four mammæ in sheep, ibid.;
 * arched nose in sheep, i. 96;
 * measurements of the intestines of goats, i. 102;
 * presence of interdigital pits in goats, ibid.;
 * disuse a cause of drooping ears, ii. 301.
 * , persistency of colour in horses, i. 51, ii. 21;
 * production of dun horses from parents of different colours, i. 59;
 * inheritance of peculiarities in handwriting, ii. 6;
 * heredity in a one-horned stag, ii. 12;
 * on consanguineous marriages, ii. 123.
 * , Red River, ii. 150.
 * , Mr., retardation of breeding in cows by hard living, ii. 112.
 * , Sir H., necessity of inheritance, ii. 2;
 * on hereditary diseases, ii. 7;
 * hereditary peculiarity in the eyelid, ii. 8;
 * morbid uniformity in the same family, ii. 17;
 * transmission of hydrocele through the female, ii. 52;
 * inheritance of habits and tricks, ii. 395.
 * , varieties of the, i. 360, 362;
 * bud-reversion in, i. 384;
 * yellow-berried, ii. 19, 230.
 * , bud-variation in, i. 378;
 * non-crossing of double varieties of, ii. 107;
 * tender variety of the, ii. 310.
 * , notice of Geese, i. 287;
 * breeding of the horses of Æneas, ii. 202.
 * parts, correlated variability of, ii. 322-331, 354-355;
 * fusion of, ii. 393;
 * affinity of, ii. 339-342.
 * , correlated with hair in variation, ii. 325.
 * , skull figured, i. 282.
 * , Dr. J. D., forked shoulder-stripe in Syrian asses, i. 63;
 * voice of the cock in Sikkim, i. 259;
 * use of Arum-roots as food, i. 307;
 * native useful plants of Australia, i. 311;
 * wild walnut of the Himalayas, i. 356;
 * variety of the plane tree, i. 362;
 * production of Thuja orientalis from seeds of T. pendula, i. 362;
 * singular form of Begonia frigida, i. 365;
 * reversion in plants run wild, ii. 33;
 * on the sugar-cane, ii. 169;
 * on Arctic plants, ii. 256;
 * on the oak grown at the Cape of Good Hope, ii. 274;
 * on Rhododendron ciliatum, ii. 277;
 * stock and mignonette, perennial in Tasmania, ii. 305.
 * , Mr., bud-variation in the rose, i. 381;
 * in Mirabilis jalapa, i. 382;
 * in Convolvulus tricolor, i. 408.
 * , heterophyllous, i. 362.
 * fowl, i. 229;
 * skull figured, i. 265.
 * cattle in Paraguay, i. 89.
 * of sheep, i. 95;
 * correlation of, with fleece in sheep, ii. 326;
 * correlation of, with the skull, ii. 333;
 * rudimentary in young polled cattle, ii. 315;
 * of goats, i. 102.
 * , in Swiss lake-dwellings, i. 49;
 * different breeds of, in Malay Archipelago, i. 49;
 * anomalies in osteology and dentition of, i. 50;
 * mutual fertility of different breeds, i. 51;
 * feral, i. 51;
 * habit of scraping away snow, i. 53;
 * mode of production of breeds of, i. 54;
 * inheritance and diversity of colour in, i. 55;
 * dark stripes in, i. 56-61, ii. 351;
 * dun-coloured, origin of, i. 59;
 * colours of feral, i. 60-61;
 * effect of fecundation by a Quagga on the subsequent progeny of, i. 403-404;
 * inheritance of peculiarities in, ii. 10-11;
 * polydactylism in, ii. 14;
 * inheritance of colour in, ii. 21;
 * inheritance of exostoses in legs of, ii. 23;
 * reversion in, ii. 33, 41;
 * hybrids of, with ass and zebra, ii. 42;
 * prepotency of transmission in the sexes of, ii. 65;
 * segregation of, in Paraguay, ii. 102;
 * wild species of, breeding in captivity, ii. 150;
 * curly, in Paraguay, ii. 205, 325;
 * selection of, for trifling characters, ii. 209;
 * unconscious selection of, ii. 212-213;
 * natural selection in Circassia, ii. 225;
 * alteration of coat of, in coal-mines, ii. 278;
 * degeneration of, in the Falkland Islands, ii. 278;
 * diseases of, caused by shoeing, ii. 300;
 * feeding on meat, ii. 305;
 * white and white-spotted, poisoned by mildewed vetches, ii. 337;
 * analogous variations in the colour of, ii. 349;
 * teeth developed on palate of, ii. 391;
 * of bronze period in Denmark, ii. 427.
 * , early, at the Tuileries, i. 362;
 * tendency to doubleness in, ii. 168.
 * , general sterility of the, ii. 170.
 * "," a French sub-breed of fowls, i. 229.
 * , C., on an Egyptian monument, i. 17;
 * on crossing sheep, ii. 95, 120.
 * , on the Emperor Khang-hi, ii. 205;
 * Chinese varieties of the bamboo, ii. 256.
 * , A., character of the Zambos, ii. 47;
 * parrot speaking the language of an extinct tribe, ii. 154;
 * on Pulex penetrans, ii. 275.
 * , injurious effect of, upon horses, i. 53.
 * , Col., on Ancon sheep, i. 100.
 * cattle, i. 80.
 * , John, period of gestation in the dog, i. 29;
 * on secondary sexual characters, i. 179;
 * fertile crossing of Anser ferus and the domestic goose, i. 288;
 * inheritance of peculiarities in gestures, voice, &c., ii. 6;
 * assumption of male characters by the human female, ii. 51;
 * period of appearance of hereditary diseases, ii. 78;
 * graft of the spur of a cock upon its comb, ii. 296;
 * on the stomach of Larus tridentatus, ii. 302;
 * double-tailed lizards, ii. 341.
 * , W., evidence against the influence of imagination upon the offspring, ii. 264.
 * , Capt., on the variability of the silk moth, i. 303;
 * on the number of species of silkworms, i. 300;
 * markings of silkworms, i. 302;
 * domestication of the rock-pigeon in India, i. 185;
 * domestication and crossing of Gallus bankiva, i. 236.
 * , Col., liability of dogs to distemper, i. 35.
 * , Prof., on the transmission of polydactylism, ii. 13;
 * on unconscious selection, ii. 194;
 * on correlation in the mollusca, ii. 320;
 * on gemmation and fission, ii. 359;
 * development of star-fishes, ii. 366.
 * , i. 370-371;
 * bud-variation in, i. 385;
 * graft-hybrid by union of half bulbs of, i. 395;
 * white, reproduced by seed, ii. 20;
 * red, ii. 229, 336;
 * varieties of, recognisable by the bulb, ii. 251.
 * , feather, ii. 185, 316.
 * Hyacinthus orientalis, i. 370.
 * Hybiscus syriacus, ii. 286.
 * , of hare and rabbit, i. 105;
 * of various species of Gallus, i. 234-236;
 * of almond, peach, and nectarine, i. 339;
 * naturally produced, of species of Cytisus, i. 390;
 * from twin-seed of Fuchsia coccinea and fulgens, i. 391;
 * reversion of, i. 392-394, ii. 36, 48-50;
 * from mare, ass, and zebra, ii. 42;
 * of tame animals, wildness of, ii. 44-46;
 * female instincts of sterile male, ii. 52;
 * transmission and blending of characters in, ii. 92-95;
 * breed better with parent species than with each other, ii. 131;
 * self-impotence in, ii. 138-140;
 * readily produced in captivity, ii. 151.
 * , singular effects of, in oranges, i. 336;
 * of cherries, i. 347;
 * difficulty of, in Cucurbitæ, i. 358;
 * of roses, i. 366.
 * , ii. 178-191;
 * the cause of a tendency to double flowers, ii. 171;
 * in relation to pangenesis, ii. 385.
 * in cats, i. 44-45;
 * supposed of peach and nectarine, i. 342.
 * Hydra, i. 374, ii. 293, 359.
 * , colour of flowers of, influenced by alum, ii. 277.
 * , ii. 52.
 * , ii. 295.
 * Hypericum calycinum, ii. 170.
 * Hypericum crispum, ii. 227, 337.
 * , ii. 367.
 * , hereditary, ii. 8.

 * , number of digits in the, ii. 16.
 * Ilex aquifolium, ii. 19.
 * , supposed effect of, on offspring, ii. 263.
 * Imatophyllum miniatum, bud-variation in, i. 385.
 * , abhorred by savages, ii. 123-124.
 * , by crossed fowls of non-sitting varieties, ii. 43-44.
 * , striped horses of, i. 58;
 * pigs of, i. 66, 67, 76;
 * breeding of rabbits in, i. 112;
 * cultivation of pigeons in, i. 205-206.
 * variability in pigeons, i. 158-160.
 * , Mr., cultivation of European vegetables in India, ii. 169.
 * " Taube," ii. 144.
 * , ii. 1-84, 371-373, 395, 397-402;
 * doubts entertained of by some writers, ii. 3;
 * importance of to breeders, 3-4;
 * evidence of, derived from statistics of chances, 5;
 * of peculiarities in man, 5-7, 12-16;
 * of disease, 7-8, 17;
 * of peculiarities in the eye, 8-10;
 * of deviations from symmetry, 12;
 * of polydactylism, 12-16;
 * capriciousness of, 17-22, 27;
 * of mutilations, 22-24;
 * of congenital monstrosities, 24;
 * causes of absence of, 24-26;
 * by reversion or atavism, 28-61;
 * its connexion with fixedness of character, 62-64;
 * affected by prepotency of transmission of character, 65-71;
 * limited by sex, 71-75;
 * at corresponding periods of life, 75-80;
 * summary of the subject of, 80-84;
 * laws of, the same in seminal and bud varieties, i. 409;
 * of characters in the horse, i. 10-11;
 * in cattle, i. 87;
 * in rabbits, i. 107;
 * in the peach, i. 339;
 * in the nectarine, i. 340;
 * in plums, i. 347;
 * in apples, i. 350;
 * in pears, i. 351;
 * in the pansy, i. 369;
 * of primary characters of Columba livia in crossed pigeons, i. 201;
 * of peculiarities of plumage in pigeons, i. 160-161;
 * of peculiarities of foliage in trees, i. 362;
 * effects of, in varieties of the cabbage, i. 325.
 * , inheritance of, ii. 7, 78.
 * , regeneration of lost parts in, ii. 15, 294;
 * agency of, in fecundation of larkspurs, ii. 21;
 * effect of changed conditions upon, ii. 157;
 * sterile neuter, ii. 186-187;
 * monstrosities in, ii. 269, 391.
 * , defective, of silkworms, i. 304.
 * , close, ill effects of, ii. 114-131, 175.
 * , of species, as a cause of variation, i. 188;
 * natural, of plants, i. 336;
 * of species of Canidæ and breeds of dogs, i. 31-33;
 * of domestic and wild cats, i. 44-45;
 * of breeds of pigs, i. 71, 78;
 * of cattle, i. 83;
 * of varieties of cabbage, i. 324;
 * of peas, i. 326, 329-330;
 * of varieties of orange, i. 336;
 * of species of strawberries, i. 351-352;
 * of Cucurbitæ, i. 357-358;
 * of flowering plants, i. 364;
 * of pansies, i. 368.
 * pits, in goats, i. 102.
 * , close, ii. 122-123.
 * , elongation of, in pigs, i. 73;
 * relative measurements of parts of, in goats, i. 102;
 * effects of changed diet on, ii. 302.
 * Ipomœa purpurea, ii. 128.
 * , remains of Bos frontosus and longifrons found in, i. 81.
 * , hereditary absence of the, ii. 9;
 * hereditary peculiarities of colour of the, ii. 9-10.
 * , ancient, selection practised by the, ii. 203.
 * period, in Europe, dog of, i. 18.
 * , oceanic, scarcity of useful plants on, i. 311.
 * , pigeons of, i. 183.
 * , effect of, in favour of selection, ii. 233-234.
 * , vine growing in, during the bronze period, i. 332.
 * , sterility of, in the north of Europe, ii. 170.

 * , Mr., effect of foreign pollen on grapes, i. 400.
 * , i. 24, 27, 30;
 * hybrids of, with the dog, i. 32;
 * prepotency of, over the dog, ii. 67.
 * pigeon, i. 154, 208.
 * , on the mulberry, i. 334.
 * , with crooked legs, i. 17.
 * , feral dogs of, i. 28;
 * feral pigs of, i. 77;
 * feral rabbits of, i. 112.
 * , horses of, i. 53.
 * pig (figured), i. 69.
 * , Sir W., crossing of domestic and wild cats, i. 44.
 * , J., silkworm in the Sandwich islands, i. 301.
 * , Fantail pigeon in, i. 148.
 * ponies, i. 53, 59.
 * , i. 309.
 * , L., whiteness of ganders, i. 288;
 * sunfish-like variety of the goldfish, i. 297.
 * , J. C., number of eggs laid by the pea-hen, ii. 112;
 * origin of domestic fowl, i. 237.
 * , arborescent cabbages of, i. 323.
 * , i. 394.
 * , Hungarian sheep-dogs, i. 24;
 * crossing of domestic and wild cats, i. 44.
 * , King, importation of stallions from Flanders by, ii. 203.
 * , D., occurrence of stripes on young wild pigs in India, i. 76.
 * , A., on Vibert's experiments on the vine, i. 332;
 * origin of varieties of the apple, i. 350;
 * varieties of pears found wild in woods, ii. 260.
 * , parthenogenesis in the silk moth, ii. 364.
 * , wild dogs on, i. 27.
 * , dumb dogs on, i. 27.
 * Juglans regia, i. 356-357.
 * , Prof., origin of the Newfoundland dog, i. 42.
 * , Stanislas, early domestication of pigs in China, i. 68;
 * antiquity of the domestication of the silk-worm in China, i. 300.
 * , a breed of fowls, i. 230.
 * , variations of the, i. 361, 364.
 * Juniperus suecica, i. 361.
 * Jussiæa grandiflora, ii. 170.
 * , A. de, structure of the pappus in Carthamus, ii. 316.

 * , Scotch, reversion in, ii. 32.
 * "" pigeon, i. 142.
 * , i. 323.
 * , P., on maize, i. 322, ii. 307;
 * introduction of wheat into Canada, i. 315;
 * sterility of trees growing in marshes and dense woods, ii. 170.
 * " Lotan," tumbler pigeon, i. 151.
 * , Dr., on Esquimaux dogs, i. 21.
 * sheep, i. 98.
 * , on inheritance in the horse, ii. 10.
 * " Taube," i. 156.
 * on Pulex penetrans, ii. 275.
 * horses, i. 58.
 * , R., pelorism in Galeobdolon luteum, ii. 59.
 * on the culture of Alpine plants, ii. 163.
 * , breeding in captivity, ii. 154.
 * "," i. 141.
 * , selection of a variety of rice by, ii. 205.
 * , ii. 43.
 * , on the canary bird, i. 77, ii. 275.
 * Bean, i. 371;
 * varieties of, ii. 256, 275.
 * , compensatory development of the, ii. 300;
 * fusion of the, ii. 341;
 * shape of, in birds, influenced by the form of the pelvis, ii. 344.
 * , Col., domestication of rock doves from the Orkneys, i. 184, 185.
 * , P. S., on the Dingo, i. 21, 28.
 * and Spence, on the growth of galls, ii. 283.
 * sheep, i. 98.
 * , breeding in captivity, ii. 154.
 * , variability of bees, i. 298.
 * , Andrew, on crossing horses of different breeds, i. 51;
 * crossing varieties of peas, i. 326, ii. 129;
 * persistency of varieties of peas, i. 329;
 * origin of the peach, i. 338;
 * hybridisation of the morello by the Elton cherry, i. 347;
 * on seedling cherries, ibid.;
 * variety of the apple not attacked by coccus, i. 349;
 * intercrossing of strawberries, i, 351, 352;
 * broad variety of the cock's comb, i. 365;
 * bud variation in the cherry and plum, i. 375;
 * crossing of white and purple grapes, i. 393;
 * experiments in crossing apples, i. 402, ii. 129;
 * hereditary disease in plants, ii. 11;
 * on interbreeding, ii. 116;
 * crossed varieties of wheat, ii. 130;
 * necessity of intercrossing in plants, ii. 175;
 * on variation, ii. 256, 257;
 * effects of grafting, i. 387, ii. 278;
 * bud-variation in a plum, ii. 289;
 * compulsory flowering of early potatoes, ii. 343;
 * correlated variation of head and limbs, ii. 323.
 * , Mr., breeding of the eagle owl in captivity, ii. 154.
 * , degeneracy in the turnip, i. 325.
 * , i. 323.
 * , reversion in hybrids, i. 392, ii. 36;
 * acquired sterility of crossed varieties of plants, i. 358, ii. 101;
 * absorption of Mirabilis vulgaris by M. longiflora, ii. 88;
 * crosses of species of Verbascum, ii. 93, 107;
 * on the hollyhock, ii. 107;
 * crossing varieties of tobacco, ii. 108;
 * benefits of crossing plants, ii. 130, 131, 175-176;
 * self-impotence in Verbascum, ii. 136, 141;
 * effects of conditions of growth upon fertility in Mirabilis, ii. 164;
 * great development of tubers in hybrid plants, ii. 172;
 * inheritance of plasticity, ii. 241;
 * variability of hybrids of Mirabilis, ii. 265;
 * repeated crossing a cause of variation, ii. 267-268;
 * number of pollen-grains necessary for fertilization, ii. 363.
 * "," i. 67.
 * , on the double reproduction of Medusæ, ii. 384.
 * "," i. 137.

 * , on the tusks of feral bears in the West Indies, i. 77;
 * on French wheat grown in the West Indies, ii. 307;
 * on the culture of the vine in the West Indies, ii. 308.
 * , Adam's, see Cytisus Adami;
 * oak-leaved, reversion of, i. 382;
 * pelorism in the, ii. 346;
 * Waterer's, i. 390.
 * , on gemmation and fission, ii. 358.
 * Lachnanthes tinctoria, ii. 227, 336.
 * , imperfect, hereditary, ii. 8;
 * deficient, of wild animals in captivity, ii. 158.
 * islands, cattle of, i. 86.
 * , Mr., resemblance of Norwegian and Devonshire cattle, i. 82.
 * , sheep of, i. 94, ii. 427;
 * cattle of, ii. 427;
 * absence of the fowl in, i. 246;
 * cultivated plants of, i. 309, ii. 427, 429;
 * cereals of, i. 317-319;
 * peas found in, i. 326;
 * beans found in, i. 330.
 * , observations on half-bred North American wolves, i. 22.
 * , A. B., on Thuja pendula or filiformis, i. 362.
 * family, ii. 4, 76.
 * on strawberries, i. 351, 352;
 * five-leaved variety of Fragaria collina, i. 353.
 * , L., on sheep in the Faroe islands, ii. 103.
 * , wild dogs of, i. 27;
 * feral cat from, i. 47.
 * , ii. 310.
 * , insect agency necessary for the full fecundation of, ii. 21.
 * Larus argentatus, ii. 157.
 * Larus tridactylus, ii. 302.
 * , merino sheep in different countries, i. 99.
 * characters, ii. 51-56.
 * , on the fowl not breeding in the extreme north, ii. 161.
 * Lathyrus, ii. 38.
 * Lathyrus aphaca, ii. 343.
 * Lathyrus odoratus, ii. 20, 91, 93, 311, 393.
 * , J. D., on a Canadian apple with dimidiate fruit, i. 392-393.
 * "," i. 154.
 * pigeon, i. 155, 207.
 * Laurus sassafras, ii. 274.
 * , J., production of a new breed of fox-hounds, i. 40;
 * occurrence of canines in mares, i. 50;
 * on three-parts-bred horses, i. 54;
 * on inheritance in the horse, ii. 10-11.
 * , Mr., varieties of the potato, i. 330.
 * , Mr., bud-variation in the gooseberry, i. 376;
 * crossing of varieties of the pea, i. 397-398;
 * double-flowered peas, ii. 168.
 * , E. L., resemblance of a Caffre dog to the Esquimaux breed, i. 25, ii. 286;
 * crossing of the domestic cat with Felis Caffra, i. 44;
 * feral pigeons in Ascension, i. 190;
 * domestic pigeons of Ceylon, i. 206;
 * on Gallus Stanleyi, i. 234;
 * on black-skinned Ceylonese fowls, i. 256.
 * family, blindness inherited in, ii. 78.
 * , bud-variation in Mirabilis jalapa, i. 382;
 * hybrids of Mirabilis, i. 393, ii. 169, 265;
 * crossing in plants, ii. 127;
 * fecundation of Passiflora, ii. 137;
 * hybrid Gladiolus, ii. 139;
 * sterility of Ranunculus ficaria, ii. 170;
 * villosity in plants, ii. 277;
 * double asters, ii. 316.
 * , J., varieties of wheat, i. 313-315;
 * acclimatisation of exotic wheat in Europe, i. 315;
 * adaptation of wheat to soil and climate, i. 316;
 * selection of seed-corn, i. 318;
 * on change of soil, ii. 147;
 * selection of wheat, ii. 200;
 * natural selection in wheat, ii. 233;
 * cattle of Jersey, ii. 234.
 * , Mr., on the Llama and Alpaca, ii. 208.
 * , Mr., his early culture of the pansy, i. 368.
 * Leersia oryzoides, ii. 91.
 * , period of gestation in cattle, i. 87.
 * , of fowls, effects of disuse on, i. 270-272;
 * characters and variations of, in ducks, i. 284-288;
 * fusion of, ii. 341.
 * , cattle of the Cape of Good Hope, i. 88.
 * , occurrence of wild double-flowered plants near a hot spring, ii. 168.
 * , W. A., propagation of a weeping yew by seed, ii. 19.
 * , effects of the removal of anthers, ii. 167.
 * , ii. 152.
 * , variegated Symphytum and Phlox, i. 384.
 * , i. 334, 335;
 * orange fecundated by pollen of the, i. 399.
 * , hybrid, ii. 153.
 * , ii. 98-99, 152.
 * , figures of ancient Egyptian dogs, i. 17;
 * domestication of pigeons in ancient Egypt, i. 204.
 * Leptotes, ii. 134.
 * Lepus glacialis, i. 111.
 * Lepus magellanicus, i. 112.
 * Lepus nigripes, i. 108.
 * Lepus tibetanus, i. 111.
 * Lepus variabilis, i. 111.
 * , double monsters of fishes, ii. 340.
 * , on Scotch wild cattle, i. 85.
 * , on Lepus magellanicus, i. 112.
 * on the larva of Cecidomyidæ, ii. 360.
 * , G., cattle of the West Indies, ii. 229.
 * and Quatrefages, on the horses of Circassia, ii. 102, 225.
 * , differences in human blood, according to complexion, ii. 276.
 * , occurrence of pigmentary retinitis in deaf-mutes, ii. 328.
 * , sterility in, ii. 171.
 * , resemblance of Bosjesman's dogs to Canis mesomelas, i. 25;
 * Newfoundland dog at the Cape of Good Hope, i. 36.
 * , ii. 164.
 * , contabescence in, ii. 165.
 * Lilium candidum, ii. 137.
 * , regeneration of, ii. 376-377.
 * and head, correlated variation of, ii. 323.
 * , effect of, upon shells of the mollusca, ii. 280.
 * tree, changes of by age, i. 364, 387.
 * , sexual, ii. 71-75.
 * , supposed, of variation, ii. 416.
 * Linaria, pelorism in, ii. 58, 61, 346;
 * peloric, crossed with the normal form, ii. 70;
 * sterility of, ii. 166.
 * Linaria vulgaris and purpurea, hybrids of, ii. 94.
 * , John, classification of varieties of cabbages, i. 324;
 * origin of the peach, i. 338;
 * influence of soil on peaches and nectarines, i. 340;
 * varieties of the peach and nectarine, i. 343;
 * on the New Town pippin, i. 349;
 * freedom of the Winter Majetin apple from coccus, i. 349;
 * production of monœcious Hautbois strawberries by bud-selection, i. 353;
 * origin of the large tawny nectarine, i. 375;
 * bud-variation in the gooseberry, i. 376;
 * hereditary disease in plants, ii. 11;
 * on double flowers, ii. 167;
 * seeding of ordinarily seedless fruits, ii. 168;
 * sterility of Acorus calamus, ii. 170;
 * resistance of individual plants to cold, ii. 309.
 * , summer and winter wheat regarded as distinct species by, i. 315;
 * on the single-leaved strawberry, i. 353;
 * sterility of Alpine plants in gardens, ii. 163;
 * recognition of individual reindeer by the Laplanders, ii. 251;
 * growth of tobacco in Sweden, ii. 307.
 * , ii. 158.
 * Linota cannabina, ii. 158.
 * , ii. 165.
 * , fertility of, in captivity, ii. 150, 151.
 * , feral rabbits of, i. 113.
 * , Dr., striped young pigs on the Zambesi, i. 77;
 * domestic rabbits at Loanda, i. 112;
 * use of grass-seeds as food in Africa, i. 308;
 * planting of fruit-trees by the Batokas, i. 309;
 * character of half-castes, ii. 46;
 * taming of animals among the Barotse, ii. 160;
 * selection practised in South Africa, ii. 207, 209.
 * , Mr., disuse a cause of drooping ears, ii. 301.
 * , reproduction of tail in, ii. 294;
 * with a double tail, ii. 341.
 * , selection of, ii. 208.
 * , Mr., taming of the wolf, i. 26;
 * English dogs in northern Europe, i. 36;
 * fertility of the goose increased by domestication, i. 288;
 * number of eggs laid by the wild goose, ii. 112;
 * breeding of the capercailzie in captivity, ii. 156.
 * , domestic rabbits at, i. 112.
 * Loasa, hybrid of two species of, ii. 98.
 * Lobelia, reversion in hybrids of, ii. 392;
 * contabescence in, ii. 166.
 * Lobelia fulgens, cardinalis, and syphilitica, ii. 136.
 * , Dr., on Chinese pigeons, i. 206.
 * , ii. 274.
 * , originals of cultivated plants, i. 307;
 * Mongolian varieties of wheat, i. 313;
 * characters of the ear in wheat, i. 314;
 * acclimatisation of exotic wheat in Europe, i. 315;
 * effect of change of climate on wheat, i. 316;
 * on the supposed necessity of the coincident variation of weeds and cultivated plants, i. 317;
 * advantage of change of soil to plants, ii. 146.
 * Lolium temulentum, variable presence of barbs in, i. 314.
 * sheep, i. 94, 95.
 * islands, horses of, i. 53.
 * , J. K., on Canis latrans, i. 22.
 * "," how produced, ii. 280.
 * Lorius garrulus, ii. 280.
 * "," tumbler pigeon, i. 150.
 * , J. W., varieties of the carrot, i. 326;
 * short duration of varieties of peas, i. 329;
 * on the glands of peach-leaves, i. 343;
 * presence of bloom on Russian apples, i. 349;
 * origin of varieties of the apple, i. 350;
 * varieties of the gooseberry, i. 354;
 * on the nut tree, i. 357;
 * varieties of the ash, i. 360;
 * fastigate juniper (J. suecica), i. 361;
 * on Ilex aquifolium ferox, i. 362;
 * varieties of the Scotch fir, i. 363;
 * varieties of the hawthorn, ibid.;
 * variation in the persistency of leaves on the elm and Turkish oak, i. 363;
 * importance of cultivated varieties, ibid.;
 * varieties of Rosa spinosissima, i. 367;
 * variation of dahlias from the same seed, i. 370;
 * production of Provence roses from seeds of the moss rose, i. 380;
 * effect of grafting the purple-leaved upon the common hazel, i. 395;
 * nearly evergreen Cornish variety of the elm, ii. 310.
 * , G., on the pigs of the Orkney islands, i. 70.
 * , Prof., pedigrees of greyhounds, ii. 3;
 * origin of the dog, i. 10;
 * burrowing instinct of a half-bred Dingo, i. 28;
 * inheritance of qualities in horses, i. 51;
 * comparative powers of English race-horses, Arabs, &c., i. 54;
 * British breeds of cattle, i. 80;
 * wild cattle of Chartley, i. 84;
 * effect of abundance of food on the size of cattle, i. 91;
 * effects of climate on the skin of cattle, i. 92, ii. 326;
 * on interbreeding, ii. 116;
 * selection in Hereford cattle, ii. 214;
 * formation of new breeds, ii. 244;
 * on "sheeted" cattle, ii. 349.
 * , Mr., on hive bees, i. 299.
 * . Mr., on the range of Pyrus malus and P. acerba, i. 348.
 * "" tumbler pigeon, i. 150.
 * Loxia pyrrhula, ii. 154.
 * , Sir J., developments of the Ephemeridæ, ii. 366.
 * , P., effects of cross-breeding on the female, i. 404;
 * hereditary diseases, ii. 7, 78-79;
 * hereditary affections of the eye, ii. 9-10;
 * inheritance of anomalies in the human eye and in that of the horse, ii. 10, 11;
 * inheritance of polydactylism, ii. 13;
 * morbid uniformity in the same family, ii. 17;
 * inheritance of mutilations, ii. 23;
 * persistency of cross-reversion, ii. 35;
 * persistency of character in breeds of animals in wild countries, ii. 64;
 * prepotency of transmission, ii. 65, 68;
 * supposed rules of transmission in crossing animals, ii. 68;
 * sexual limitations of transmission of peculiarities, ii. 72-73;
 * absorption of the minority in crossed races, ii. 88;
 * crosses without blending of certain characters, ii. 92;
 * on interbreeding, ii. 116;
 * variability dependent on reproduction, ii. 250;
 * period of action of variability, ii. 260;
 * inheritance of deafness in cats, ii. 329;
 * complexion and constitution, ii. 335.
 * , structure and growth of galls, ii. 282-284.
 * , grafting of a peach-almond on a peach, i. 338.
 * , cats of the Caroline Archipelago, i. 47.
 * , of vegetative organs, a cause of sterility in plants, ii. 168-171.
 * , on the scission of Nais, ii. 358.
 * Lysimachia nummularia, sterility of, ii. 170.
 * Lythrum, trimorphic species of, ii. 400.
 * Lythrum salicaria, ii. 183;
 * contabescence in, ii. 166.
 * Lytta vesicatoria, affecting the kidneys, ii. 380.

 * Macacus, species of, bred in captivity, ii. 153.
 * , Lord, improvement of the English horse, ii. 213.
 * , Dr., variability of fresh-water fishes in India, ii. 259.
 * , Prof., on the dingo, i. 26.
 * , influence of soil in producing sweet or bitter oranges from the same seed, i. 335.
 * , domestication of the rock-dove, i. 185;
 * feral pigeons in Scotland, i. 190;
 * number of vertebræ in birds, i. 266;
 * on wild geese, i. 287;
 * number of eggs of wild and tame ducks, ii. 112.
 * , Sir G., peculiar variety of the potato, i. 330.
 * , P., bud-variation in the currant, i. 376.
 * , Mr., horses of the Falkland islands, i. 52;
 * feral cattle of the Falkland islands, i. 86.
 * , C., on interbreeding cattle, ii. 118.
 * , Mr., on seedling weeping birches, ii. 18;
 * non-production of the weeping beech by seed, ii. 19.
 * , cats of, i. 47.
 * , H., on interbreeding cattle, ii. 118.
 * , rock pigeon of, i. 184.
 * Magnolia grandiflora, ii. 308.
 * , its unity of origin, i. 320;
 * antiquity of, ibid.;
 * with husked grains said to grow wild, ibid.;
 * variation of, i. 321;
 * irregularities in the flowers of, i. 321;
 * persistence of varieties, ibid.;
 * adaptation of to climate, i. 322, ii. 307;
 * acclimatisation of, ii. 313, 347;
 * crossing of, i. 400, ii. 104-105;
 * extinct Peruvian varieties of, ii. 425.
 * fowl, i. 227.
 * Archipelago, horses of, i. 53;
 * short-tailed cats of, i. 47;
 * striped young wild pigs of, i. 76;
 * ducks of, i. 280.
 * , influence of, on the fecundated female, i. 397-406;
 * supposed influence of, on offspring, ii. 68.
 * flowers, appearance of, among female flowers in maize, i. 321.
 * , hereditary, ii. 79.
 * Malva, fertilisation of, i. 402, ii. 363.
 * Mamestra suasa, ii. 157.
 * , variable in number in the pig, i. 74;
 * rudimentary, occasional full development of, in cows, i. 87, ii. 317;
 * four present in some sheep, i. 95;
 * variable in number in rabbits, i. 106;
 * latent functions of, in male animals, ii. 52, 317;
 * supernumerary and inguinal, in women, ii. 57.
 * , Mr., annual varieties of the heartsease, ii. 305.
 * , Mr., taming of birds by the New Zealanders, ii. 161.
 * , domestic fowl noticed in the Institutes of, i. 246.
 * , effect of, on the fertility of plants, ii. 163.
 * cats, i. 46, ii. 66.
 * de Serres, fertility of the ostrich, ii. 156.
 * islands, varieties of Pandanus in, ii. 256.
 * , Gervase, on rabbits, i. 104, ii. 204.
 * , probably one of the parents of the goat, i. 101.
 * , cattle of the channel islands, i. 80.
 * , inheritance in the horse, ii. 10.
 * , vegetable, i. 357.
 * , Capt., breeding of asses in Kentucky, ii. 237.
 * , notice of Gallus giganteus, i. 235.
 * , Mr., voluntary selection of pasture by sheep, i. 96;
 * adaptation of wheats to soil and climate, i. 316;
 * "Dutch-buttocked" cattle, ii. 8;
 * segregation of herds of sheep, ii. 103;
 * advantage of change of soil to wheat and potatoes, ii. 146;
 * fashionable change in the horns of cattle, ii. 210;
 * sheep in Yorkshire, ii. 235.
 * , Prof., growth of the brain in microcephalous idiots, ii. 389.
 * , E. Von, on Achatinella, ii. 53.
 * , W. C. L., origin of the dog, i. 16;
 * Egyptian dogs, i. 18;
 * barking of a Mackenzie River dog, i. 27;
 * African hounds in the Tower menagerie, i. 32;
 * on dun horses and dappled asses, i. 55;
 * breeds of the horse, i. 49;
 * wild horses, i. 51;
 * Syrian breeds of asses, i. 62;
 * asses without stripes, i. 63;
 * effects of cross-breeding on the female in dogs, i. 404;
 * striped legs of mules, ii. 42.
 * , defective instincts of silkworms, i. 304.
 * , C., fruit trees of Stockholm, ii. 307.
 * , W., bud-variation in the ash, i. 382.
 * , Dr., reversion in the spiral-leaved weeping willow, i. 383;
 * on peloric flowers, ii. 58;
 * pelorism in a clover, ii. 346;
 * position as a cause of pelorism, ii. 345, 347.
 * , Mr., persistence of varieties of peas, i. 329;
 * reproduction of colour in hyacinths, ii. 20;
 * on hollyhocks, ii. 107;
 * selection of peas for seed, ii. 199-200;
 * on Opuntia leucotricha, ii. 286;
 * reversion by the terminal pea in the pod, ii. 347.
 * , sculptured on an Assyrian monument, i. 17, ii. 429;
 * Tibetan, i. 35-36, ii. 278.
 * , Patrick, on forest trees, ii. 237.
 * Matthiola annua, i. 399, ii. 20.
 * Matthiola incana, i. 381, 399.
 * , merino sheep, i. 100.
 * , crossing of wolves and dogs in the Pyrenees, i. 24.
 * , Mr. crossed varieties of wheat, ii. 130.
 * , axiom of "least action," i. 12.
 * , importation of goats into, i. 101.
 * , G., correlation of contracted leaves and flowers in pelargoniums, ii. 330, 331.
 * , fertility of Brassica rapa, ii. 165.
 * Maxillaria, self-fertilised capsules of, ii. 134;
 * number of seeds in, ii. 379.
 * Maxillaria atro-rubens, fertilisation of, by M. squalens, ii. 133.
 * , M., self-impotence in Amaryllis, ii. 139.
 * , on the number of digits, ii. 13;
 * correlation of abnormal muscles in the leg and arm, ii. 322.
 * , development of, ii. 368, 384.
 * , Mr., comparison of European and American trees, ii. 281.
 * Meleagris mexicana, i. 292.
 * Meles taxus, ii. 151.
 * , i. 359-360;
 * mongrel, supposed to be produced from a twin-seed, i. 391;
 * crossing of varieties of, i. 399, ii. 108, 129;
 * inferiority of, in Roman times, ii. 216;
 * changes in, by culture and climate, ii. 275;
 * serpent, correlation of variations in, ii. 330;
 * analogous variations in, ii. 349.
 * , false, ii. 294-295.
 * , on the stomach of Strix grallaria, ii. 302.
 * , tubercular, inherited, ii. 78.
 * , ii. 366.
 * , ii. 366.
 * and development, ii. 388, 389.
 * , on the supposed species of wheat, i. 312-313;
 * tendency of wheat to vary, i. 315;
 * variation of maize, i. 321-322;
 * cultivation of American maize in Europe, i. 322, ii. 347;
 * on cabbages, i. 323-325;
 * acclimatisation of Spanish wheat in Germany, ii. 26;
 * advantage of change of soil to plants, ii. 146;
 * on rye, ii. 254;
 * cultivation of different kinds of wheat, ii. 261.
 * , dog from, with tan spots on the eyes, i. 29;
 * colours of feral horses in, i. 61.
 * , on sending of bananas, ii. 168.
 * , grey and white, colours of, not blended by crossing, ii. 92;
 * rejection of bitter almonds by, ii. 232;
 * naked, ii. 279.
 * , F., roan-coloured feral horses of Mexico, i. 61;
 * origin of domestic turkey, i. 292;
 * on raising peaches from seed, i. 339.
 * , F., selection of horses in mediæval times, ii. 203;
 * horses preferred on account of slight characters, ii. 209.
 * , effects of food on caterpillars, ii. 280;
 * on Bombyx hesperus, ii. 304.
 * , associated with defective teeth, ii. 328.
 * , Danish, remains of dogs in, i. 18, ii. 427.
 * , ii. 237, 311.
 * , i. 371.
 * , J., diminished fertility of mares when first turned out to grass, ii. 161.
 * , on the development of the crustacea, ii. 368.
 * , A., on a crustacean with a monstrous eye-peduncle, ii. 391.
 * Milvus niger, ii. 154.
 * Mimulus luteus, ii. 128.
 * , W. C., gemmation and fission in the Annelida, ii. 358.
 * Mirabilis, fertilisation of, ii. 363;
 * hybrids of, ii. 131, 169, 265.
 * Mirabilis jalapa, i. 382, 393.
 * Mirabilis longiflora, ii. 88.
 * Mirabilis vulgaris, ii. 88.
 * Misocampus and Cecidomyia, i. 5.
 * , Dr., effects of the poison of the rattlesnake, ii. 289.
 * , Mr., notice of the breeding of horses by Erichthonius, ii. 202.
 * Court, weeping oak at, ii. 18.
 * , horses poisoned by fool's parsley, ii. 337.
 * , L., effects of food on insects, ii. 281.
 * , original form of maize, i. 320;
 * variety of the double columbine, i. 365;
 * peloric flowers, ii. 58-59, 61;
 * position as a cause of pelorism in flowers, ii. 345;
 * tendency of peloric flowers to become irregular, ii. 70;
 * on monstrosities, ii. 254;
 * correlation in the axis and appendages of plants, ii. 321;
 * fusion of homologous parts in plants, ii. 339, 341-342;
 * on a bean with monstrous stipules and abortive leaflets, ii. 343;
 * conversion of parts of flowers, ii. 392.
 * , white, ii. 332.
 * and Gayot, on cattle, i. 80, ii. 96, 210.
 * , change in shells of, ii. 280.
 * , Lady, culture of the pansy by, i. 368.
 * , rarely fertile in captivity, ii. 153.
 * , identity of summer and winter wheat, i. 315.
 * , cyclopean, ii. 341.
 * , double, ii. 339-340.
 * , occurrence of, in domesticated animals and cultivated plants, i. 366, ii. 254;
 * due to persistence of embryonic conditions, ii. 57;
 * occurring by reversion, ii. 57-60;
 * a cause of sterility, ii. 166-167;
 * caused by injury to the embryo, ii. 269.
 * , growth of a cock's-spur inserted into the eye of an ox, ii. 369.
 * , E., formation of cells, ii. 370.
 * , J. H., deterioration of the horse in Malasia, i. 53.
 * , Mr., on Hasora wheat, i. 313;
 * selection of white-tailed yaks, ii. 206;
 * melon of Kaschmir, ii. 275;
 * varieties of the apricot cultivated in Ladakh, i. 345;
 * varieties of the walnut cultivated in Kaschmir, i. 356.
 * , Mr., on breeds of pigeons, i. 148, 156, 208, 209, 211.
 * , fertility of, in captivity, ii. 156.
 * , dogs of the Danish Middens, i. 18;
 * sheep and horse of the bronze period, ii. 427.
 * Mormodes ignea, ii. 53.
 * , estimation of pigeons in, i. 205.
 * , C., on pelorism, ii. 58;
 * in Calceolaria, ii. 346;
 * non-coincidence of double flowers and variegated leaves, ii. 167.
 * , Mr., breeding of the Kestrel in captivity, ii. 154.
 * , Lord, effect of fecundation by a quagga on an Arab mare, i. 403-404.
 * , Dr., origin of the dog, i. 16;
 * hybrid of zebra and mare, ii. 42.
 * Morus alba, i. 334.
 * , rabbits of, i. 106, 120;
 * effects of cold on pear-trees at, ii. 307.
 * , sterility in, ii. 171;
 * retrogressive metamorphosis in, ii. 361.
 * , probable origin of, from Rosa centifolia, i. 379;
 * Provence roses produced from seeds of, i. 380.
 * , Cada, on the introduction of rabbits into Porto Santo, i. 113.
 * of fruits and flowers, i. 400.
 * , i. 94.
 * , ii. 230.
 * , Barbary, ii. 152.
 * "," i. 148.
 * , Mr., on the eggs of game fowls, i. 248;
 * early pugnacity of game cocks, i. 251;
 * diminished fecundity of the pheasant in captivity, ii. 155.
 * , Mr., reciprocal fecundation of Passiflora alata and racemosa, ii. 137.
 * , character of, ii. 46.
 * , i. 334, ii. 256.
 * and hinny, differences in the, ii. 67-68.
 * , striped colouring of, ii. 42;
 * obstinacy of, ii. 45;
 * production of, among the Romans, ii. 110;
 * noticed in the Bible, ii. 202.
 * , Fritz, reproduction of orchids, ii. 134-135;
 * development of crustacea, ii. 368;
 * number of seeds in a maxillaria, ii. 379.
 * , H., on the face and teeth in dogs, i. 34, 73, ii. 345.
 * , J., production of imperfect nails after partial amputation of the fingers, ii. 15;
 * tendency to variation, ii. 252;
 * atrophy of the optic nerve consequent on destruction of the eye, ii. 297;
 * on Janus-like monsters, ii. 340;
 * on gemmation and fission, ii. 358;
 * identity of ovules and buds, ii. 360;
 * special affinities of the tissues, ii. 380.
 * , Max, antiquity of agriculture, ii. 243.
 * of origin of pigeons, hypotheses of, discussed, i. 188-194.
 * , F., on Niata cattle, i. 90.
 * , R., on the fertilisation of orchids, ii. 133;
 * reproduction of Passiflora alata, ii. 138.
 * "" pigeon, i. 144.
 * , J. J., the structure of the eye not producible by selection, ii. 222.
 * Mus alexandrinus, ii. 87-88.
 * Musa sapientum, Chinensis and Cavendishii, i. 377.
 * Muscari comosum, ii. 185, 316.
 * , effects of use on, ii. 297.
 * duck, feral hybrid of, with the common duck, i. 190.
 * , female, sometimes hornless, i. 95.
 * , inheritance or non-inheritance of, ii. 22-24, 397.
 * , on a five-leaved variety of the strawberry, i. 353.
 * , hereditary, ii. 8.
 * , regeneration of lost parts in, ii. 15, 294.

 * , growing on stumps of fingers, ii. 394.
 * , scission of, ii. 358.
 * , cattle of the, i. 88, ii. 207.
 * , double, becoming single in poor soil, ii. 167.
 * , on the cultivation of native plants in Florida, i. 312.
 * Nasua, sterility of, in captivity, ii. 152.
 * "," or Niatas, a South American breed of cattle, i. 89-91.
 * , H. von, on the pigs of the Swiss lake-dwellings, i. 68;
 * on the races of pigs, i. 65-68;
 * convergence of character in highly-bred pigs, i. 73, ii. 241;
 * causes of changes in the form of the pig's skull, i. 72-73;
 * changes in breeds of pigs by crossing, i. 78;
 * change of form in the pig, ii. 279;
 * effects of disuse of parts in the pig, ii. 299;
 * period of gestation in the pig, i. 74;
 * appendages to the jaw in pigs, i. 76;
 * on Sus pliciceps, i. 70;
 * period of gestation in sheep, i. 97;
 * on Niata cattle, i. 89;
 * on short-horn cattle, ii. 118;
 * on interbreeding, ii. 116;
 * in the sheep, ii. 120;
 * in pigs, ii. 122;
 * unconscious selection in cattle and pigs, ii. 214;
 * variability of highly selected races, ii. 238.
 * , P., on the Bizzaria orange, i. 391.
 * selection, its general principles, i. 2-14.
 * , sense in which the term is employed, i. 6.
 * , supposed rules of transmission in crossing plants, ii. 68;
 * on the nature of hybrids, ii. 48-49;
 * essences of the species in hybrids, ii. 386, 401;
 * reversion of hybrids, ii. 36, 49-50;
 * reversion in flowers by stripes and blotches, ii. 37;
 * hybrids of Linaria vulgaris and purpurea, ii. 94;
 * pelorism in Linaria, ii. 58, 346;
 * crossing of peloric Linaria with the normal form, ii. 70;
 * variability in Datura, ii. 266;
 * hybrids of Datura lævis and stramonium, i. 392;
 * prepotency of transmission of Datura stramonium when crossed, ii. 67;
 * on the pollen of Mirabilis and of hybrids, i. 389;
 * fertilisation of Mirabilis, ii. 363;
 * crossing of Chamærops humilis and the date palm, i. 399;
 * cultivated Cucurbitaceæ, i. 357-360, ii. 108;
 * rudimentary tendrils in gourds, ii. 316;
 * dwarf Cucurbitæ, ii. 330;
 * relation between the size and number of the fruit in Cucurbita pepo, ii. 343;
 * analogous variation in Cucurbitæ, ii. 349;
 * acclimatisation of Cucurbitaceæ, ii. 313;
 * production of fruit by sterile hybrid Cucurbitaceæ, ii. 172;
 * on the melon, i. 360, ii. 108, 275;
 * incapacity of the cucumber to cross with other species, i. 359.
 * , i. 336-344;
 * derived from the peach, i. 337, 339-342;
 * hybrids of, i. 339;
 * persistency of characters in seedling, i. 340;
 * origin of, ibid.;
 * produced on peach trees, i. 340-341;
 * producing peaches, i. 341;
 * variation in, i. 342-343;
 * bud-variation in, i. 374;
 * glands in the leaves of the, ii. 231;
 * analogous variation in, ii. 348.
 * , variations of, in pansies, i. 369.
 * , on changes in the odour of plants, ii. 274.
 * "" cat, i. 46.
 * , polydactylism in, ii. 14;
 * selection of cattle practised by, ii. 207.
 * period, domestication of Bos longifrons and primigenius in the, i. 81;
 * cattle of the, distinct from the original species, i. 87;
 * domestic goat in the, i. 101;
 * cereals of the, i. 317.
 * , optic, atrophy of the, ii. 297.
 * , on the Dutch and German pouter pigeons, i. 138;
 * on the Jacobin pigeon, i. 154;
 * duplication of the middle flight feather in pigeons, i. 159;
 * on a peculiarly coloured breed of pigeons, "Staarhalsige Taube," i. 161;
 * fertility of hybrid pigeons, i. 192;
 * mongrels of the trumpeter pigeon, ii. 66;
 * period of perfect plumage in pigeons, ii. 77;
 * advantage of crossing pigeons, ii. 126.
 * , hereditary, ii. 79.
 * , feral cats of, i. 47;
 * cultivated plants of, i. 311.
 * dog, modification of, in England, i. 42.
 * , E., sterility of Sphingidæ under certain conditions, ii. 158.
 * , G., non-copulation of Vanessæ in confinement, ii. 157;
 * regeneration of limbs in myriapoda, ii. 294;
 * fertilisation of the ovule in batrachia, ii. 363.
 * , polydactylism in the, ii. 14.
 * , A., absence of sexual distinctions in the Columbidæ, i. 162;
 * production of a "black-shouldered" pea-hen among the ordinary kind, i. 291;
 * on hybrid ducks, ii. 157.
 * , Lake, cattle of, i. 88.
 * "" cattle, i. 89-91;
 * resemblance of to Sivatherium, i. 89;
 * prepotency of transmission of character by, ii. 66.
 * "" rabbit, i. 107.
 * , Dr., on the cats of Antigua, i. 46;
 * on the sheep of Antigua, i. 98.
 * Nicotiana, crossing of varieties and species of, ii. 108;
 * prepotency of transmission of characters in species of, ii. 67;
 * contabescence of female organs in, ii. 166.
 * Nicotiana glutinosa, ii. 108.
 * , on the heredity of mental characteristics in some Roman families, ii. 65.
 * , non-reversion to, ii. 36.
 * , Prof., on the barking of a young wolf, i. 27;
 * parentage of European breeds of cattle, i. 80, 81;
 * on Bos frontosus in Scania, i. 81.
 * , Mr., on the dingo, i. 39.
 * " formativus," i. 293, 294, 355.
 * , on the absence of the oil-gland in certain Columbæ, i. 147.
 * , causes of, ii. 24-26.
 * "" pigeon, i. 154.
 * , dogs of Awhasie, i. 25.
 * , pigs of, with appendages under the jaw, i. 75.
 * , striped ponies of, i. 58.
 * and Gliddon, on the origin of the dog, i. 16;
 * mastiff represented on an Assyrian tomb, i. 17;
 * on Egyptian dogs, i. 18;
 * on the Hare-Indian dog, i. 22.
 * Notylia, ii. 135.
 * , excess of, a cause of variability, ii. 257.
 * , importance of, in selection, ii. 235.
 * Numida ptilorhyncha, the original of the Guinea-fowl, i. 294.
 * pigeon, i. 155;
 * known to Aldrovandi, i. 207.
 * tree, ii. 237.

 * , weeping, i. 361, ii. 18, 241;
 * pyramidal, i. 361;
 * Hessian, i. 361;
 * late-leaved, i. 363;
 * variation in persistency of leaves of, i. 363;
 * valueless as timber at the Cape of Good Hope, ii. 274;
 * changes in, dependent on age, i. 387;
 * galls of the, ii. 282.
 * , wild, i. 313;
 * in the Swiss lake-dwellings, i. 319.
 * , change of soil beneficial to the potato, ii. 146.
 * , Count, varieties of the vine, i. 333, ii. 278;
 * bud-variation in the vine, i. 375.
 * and colour, correlation of, ii. 325.
 * Œcidium, ii. 284.
 * Œnothera biennis, bud-variation in, i. 382.
 * , W., resemblance of twins, ii. 252.
 * , absence of, in fantail pigeons, i. 147, 160.
 * , Mr., estimation of European dogs among the natives of Australia, ii. 215.
 * , stock affected by grafting in the, i. 394.
 * , Dr., insertion of the periosteum of a dog beneath the skin of a rabbit, ii. 369.
 * Oncidium, reproduction of, ii. 133-135, 164.
 * , crossing of, ii. 90;
 * white, liable to the attacks of fungi and disease, ii. 228, 336.
 * Ophrys apifera, self-fertilisation of, ii. 91;
 * formation of pollen by a petal in, ii. 392.
 * Opuntia leucotricha, ii. 277.
 * , i. 334-336;
 * crossing of, ii. 91;
 * with the lemon, i. 399, ii. 365;
 * naturalisation of, in Italy, ii. 308;
 * variation of, in North Italy, ii. 256;
 * peculiar variety of, ii. 331;
 * Bizzaria, i. 391;
 * trifacial, ibid.
 * , reproduction of, i. 402, 403; ii. 133-135.
 * , Lord, crossing greyhounds with the bulldog, i. 41.
 * , origin of, i. 13.
 * , advancement in, i. 8.
 * , rudimentary and aborted, ii. 315-318;
 * multiplication of abnormal, ii. 391.
 * , assumption of hen-plumage by a male in confinement, ii. 158.
 * islands, pigs of, i. 70;
 * pigeons of, i. 184.
 * , regeneration of hind legs in the, ii. 294.
 * Orthosia munda, ii. 157.
 * , R., on the effects of cross-breeding on the female, i. 404;
 * on the Manx cat, ii. 66;
 * on mongrels from the silk-fowl, ii. 67.
 * , Dr., inherited mottling of the iris, ii. 10.
 * , preying on Black-fowls, ii. 230.
 * , Baron, on American oak galls, ii. 282.
 * characters of pigs, i. 66, 67, 71-74;
 * of rabbits, i. 115-130;
 * of pigeons, i. 162-167;
 * of ducks, i. 282-284.
 * , diminished fertility of the, in captivity, ii. 156.
 * , selection of dogs by the, ii. 206.
 * , ii. 151.
 * "" sheep of Massachusetts, i. 100.
 * , feral humped cattle in, i. 79.
 * , breed in Europe, ii. 153.
 * , variation of, in Cucurbita moschata, i. 359;
 * development of, independently of pollen, i. 403.
 * Ovis montana, i. 99.
 * and buds, identity of nature of, ii. 360.
 * , Capt., on stiff-haired cats at Mombas, i. 46.
 * , Prof. R., palæontological evidence as to the origin of dogs, i. 15;
 * on Bos longifrons, i. 81;
 * on the skull of the "Niata" cattle, i. 89, 90;
 * on fossil remains of rabbits, i. 104;
 * on the significance of the brain, i. 124;
 * on the number of digits in the Ichthyopterygia, ii. 16;
 * on metagenesis, ii. 366;
 * theory of reproduction and parthenogenesis, ii. 375.
 * , eagle, breeding in captivity, ii. 154.
 * pigeon, i. 148;
 * African, figured, i. 149;
 * known in 1735, i. 209.
 * Oxalis, trimorphic species of, ii. 400.
 * Oxalis rosea, ii. 132.
 * , Mr., on the nutmeg tree, ii. 237.
 * , differences in the shells of, ii. 280.

 * , sterility of the, in confinement, ii. 152.
 * islands, pigs of the, i. 70.
 * , earliest known flower garden at, ii. 217.
 * fowl of Aldrovandi, i. 247.
 * Pæonia moutan, ii. 205.
 * , tree, ancient cultivation of, in China, ii. 205.
 * , feral cattle on the, i. 85.
 * Pandanus, ii. 256.
 * , hypothesis of, ii. 357-404.
 * Panicum, seeds of, used as food, i. 309;
 * found in the Swiss lake-dwellings, i. 317.
 * , i. 368-370.
 * , abortion of the, in Carthamus, ii. 316.
 * , on the Hungarian sheep dog, i. 24.
 * , inheritance of cancer, ii. 7;
 * hereditary elongation of hairs in the eyebrow, ii. 8;
 * period of inheritance of cancer, ii. 79-80;
 * on Hydra, ii. 293;
 * on the healing of wounds, ii. 294;
 * on the reparation of bones, ibid.;
 * growth of hair near inflamed surfaces or fractures, ii. 295;
 * on false membranes, ibid.;
 * compensatory development of the kidney, ii. 300;
 * bronzed skin in disease of supra-renal capsules, ii. 331;
 * unity of growth and gemmation, ii. 359;
 * independence of the elements of the body, ii. 369;
 * affinity of the tissues for special organic substances, ii. 380.
 * , on the influence of domestication upon the sterility of intercrossed species, i. 31, 83, 193, ii. 109;
 * hypothesis that variability is wholly due to crossing, i. 188, 374, ii. 250, 264;
 * on the origin of the dog, i. 16;
 * variation in dogs, i. 33;
 * crossing of dog and jackal, i. 25;
 * origin of domestic cats, i. 43;
 * origin of Angora cat, i. 45;
 * on wild horses, i. 52, 60;
 * on Persian sheep, i. 94;
 * on Siberian fat-tailed sheep, ii. 279;
 * on Chinese sheep, ii. 315;
 * on Crimean varieties of the vine, i. 333;
 * on a grape with rudimentary seeds, ii. 316;
 * on feral musk-ducks, ii. 46;
 * sterility of Alpine plants in gardens, ii. 163;
 * selection of white-tailed yaks, ii. 206.
 * Paradoxurus, sterility of species of, in captivity, ii. 151.
 * , cats of, i. 46;
 * cattle of, i. 89;
 * horses of, ii. 102;
 * dogs of, ii. 102;
 * black-skinned domestic fowl of, i. 232.
 * variation, ii. 348-352.
 * , woolly pigs of, i. 78.
 * , liability to attacks of, dependent on colour, ii. 228.
 * dog, with crooked legs, i. 17;
 * resembling the Indian wolf, i. 24.
 * , inheritance of handwriting, ii. 6.
 * , W. K., number of vertebræ in fowls, i. 266.
 * , Mr., varieties of the hyacinth, i. 370.
 * , Mansfield, on Columba guinea, i. 183.
 * , differences in the nidification of pigeons, i. 178;
 * on white pigeons, ii. 230.
 * , general sterility of, in confinement, ii. 155;
 * alteration of plumage of, ii. 280.
 * , reversion in, ii. 31;
 * influence of selection on, ii. 201;
 * experiments on, ii. 277;
 * wild, enlargement of roots of, by cultivation, i. 326.
 * , ii. 359, 364.
 * , sterility of, in captivity, ii. 156.
 * , difficult, hereditary, ii. 8.
 * Parus major, ii. 231.
 * Passiflora, self-impotence in species of, ii. 137-138;
 * contabescence of female organs in, ii. 166.
 * Passiflora alata, fertility of, when grafted, ii. 188.
 * and climate, adaptation of breeds of sheep to, i. 96, 97.
 * , Julia, peculiarities in the hair and teeth of, ii. 328.
 * , crania of pigs from, i. 77.
 * rabbit, i. 105.
 * , R., on the Arrindy silk moth, ii. 306.
 * , W., on the hyacinth, i. 370;
 * varieties of pelargoniums, i. 378;
 * improvement of pelargoniums, ii. 216.
 * Pavo cristatus and muticus, hybrids of, i. 290.
 * Pavo nigripennis, i. 290-291.
 * "," i. 141.
 * , i. 336-344;
 * derived from the almond, i. 337;
 * stones of, figured, ibid.;
 * contrasted with almonds, i. 338;
 * double-flowering, i. 338-339, 343;
 * hybrids of, i. 339;
 * persistency of races of, ibid.;
 * trees producing nectarines, i. 340-341;
 * variation in, i. 342-343, ii. 256;
 * bud-variation in, i. 374;
 * pendulous, ii. 18;
 * variation by selection in, ii. 218;
 * peculiar disease of the, ii. 228;
 * glands on the leaves of the, ii. 231;
 * antiquity of the, ii. 308;
 * increased hardiness of the, ibid.;
 * varieties of, adapted for forcing, ii. 310;
 * yellow-fleshed, liable to certain diseases, ii. 336.
 * , i. 338.
 * , origin of, i. 290;
 * japanned or black-shouldered, i. 290-291;
 * feral, in Jamaica, i. 190;
 * comparative fertility of, in wild and tame states, ii. 112, 268;
 * white, ii. 332.
 * , i. 350;
 * bud-variation in, i. 376;
 * reversion in seedling, ii. 31;
 * inferiority of, in Pliny's time, ii. 215;
 * winter nelis, attacked by aphides, ii. 231;
 * soft-barked varieties of, attacked by wood-boring beetles, ii. 231;
 * origination of good varieties of, in woods, ii. 260;
 * Forelle, resistance of, to frost, ii. 306.
 * , i. 326-330;
 * origin of, 326;
 * varieties of, 326-329;
 * found in Swiss lake-dwellings, i. 317, 319, 326-329;
 * fruit and seeds figured, i. 328;
 * persistency of varieties, i. 329;
 * intercrossing of varieties, i. 330, 397, ii. 129;
 * effect of crossing on the female organs in, i. 398;
 * double-flowered, ii. 168;
 * maturity of, accelerated by selection, ii. 201;
 * varieties of, produced by selection, ii. 218;
 * thin-shelled, liable to the attacks of birds, ii. 231;
 * reversion of, by the terminal seed in the pod, ii. 347.
 * , breeding of the, in captivity, ii. 150.
 * of horses, cattle, greyhounds, game-cocks, and pigs, ii. 3.
 * , cats of, i. 47;
 * horses of, i. 53.
 * , multiple origin of, i. 364;
 * zones of, i. 366;
 * bud-variation in, i. 378;
 * variegation in, accompanied by dwarfing, i. 384;
 * pelorism in, ii. 167, 345;
 * by reversion, ii. 59;
 * advantage of change of soil to, ii. 147;
 * improvement of, by selection, ii. 216;
 * scorching of, ii. 229;
 * numbers of, raised from seed, ii. 235;
 * effects of conditions of life on, ii. 274;
 * stove-variety of, ii. 311;
 * correlation of contracted leaves and flowers in, ii. 330-331.
 * Pelargonium fulgidum, conditions of fertility in, ii. 164.
 * "," a Columbian breed of cattle, i. 88.
 * flowers, tendency of, to acquire the normal form, ii. 70;
 * fertility or sterility of, ii. 166-167.
 * races of Gloxinia speciosa and Antirrhinum majus, i. 365.
 * , ii. 58-60, 345-346.
 * , characters of, in rabbits, i. 122-123;
 * in pigeons, i. 166;
 * in fowls, i. 268;
 * in ducks, i. 284.
 * cattle, i. 81.
 * trees, i. 361, ii. 348;
 * uncertainty of transmission of, ii. 18-19.
 * ducks, i. 280, 282;
 * hybrid of the, with the Egyptian goose, i. 282.
 * , production of wolf-like curs at Fochabers, i. 37;
 * on the Duke of Queensberry's wild cattle, i. 84.
 * Pennisetum, seeds of, used as food in the Punjab, i. 309.
 * Pennisetum distichum, seeds of, used as food in Central Africa, i. 308.
 * , Mr., on inheritance in horses, ii. 10;
 * on horn-like processes in horses, i. 50.
 * Perdix rubra, occasional fertility of, in captivity, ii. 156.
 * of action of causes of variability, ii. 269.
 * of a dog, producing bone in a rabbit, ii. 369.
 * , sterility of, in England, ii. 170.
 * , estimation of pigeons in, i. 205;
 * carrier pigeon of, i. 141;
 * tumbler pigeon of, i. 150;
 * cats of, i. 45-47;
 * sheep of, i. 94.
 * Persica intermedia, i. 338.
 * of colour in horses, i. 50;
 * of generic peculiarities, i. 111.
 * , antiquity of maize in, i. 320;
 * peculiar potato from, i. 331;
 * selection of wild animals practised by the Incas of, ii. 207-208.
 * "," i. 154.
 * , rudimentary, in cultivated plants, ii. 316;
 * producing pollen, ii. 392.
 * , multiple origin of, i. 364;
 * double-flowered, ii. 167.
 * "," i. 146.
 * Phacochœrus Africanus, i. 76.
 * Phalænopsis, pelorism in, ii. 346.
 * , deficiency of, ii. 73.
 * Phaps chalcoptera, ii. 349.
 * Phaseolus multiflorus, ii. 309, 322.
 * Phaseolus vulgaris, ii. 309.
 * Phasianus pictus, i. 275.
 * Phasianus Amherstiæ, i. 275.
 * , assumption of male plumage by the hen, ii. 51;
 * wildness of hybrids of, with the common fowl, ii. 45;
 * prepotency of the, over the fowl, ii. 68;
 * diminished fecundity of the, in captivity, ii. 155.
 * , golden and Lady Amherst's, i. 275.
 * , i. 244.
 * , regeneration of limbs in the salamander, ii. 376.
 * , on the varieties of wheat, i. 314.
 * Islands, named breeds of game fowl in the, i. 232.
 * , Mr., on bud-variation in the potato, i. 385.
 * Phlox, bud-variation by suckers in, i. 384.
 * , affection of the fingers in, ii. 332.
 * , Mr., on the grunting voice of humped cattle, i. 79;
 * occurrence of the head of a fowl in an ancient Egyptian procession, i. 246;
 * seeding of ordinarily seedless fruits, ii. 168;
 * extinction of ancient Egyptian breeds of sheep and oxen, ii. 425;
 * on an ancient Peruvian gourd, ii. 429.
 * , effect of conditions of life on, ii. 273.
 * , A., oriental names of the pigeon, i. 205.
 * , Prof., origin of the dog, i. 15;
 * on fossil oxen, i. 81.
 * , probably due to reversion, ii. 37.
 * , hybrids of the hare and rabbit, ii. 99, 152.
 * à cravate, i. 148.
 * Bagadais, i. 142, 143.
 * coquille, i. 155.
 * cygne, i. 143.
 * heurté, i. 156.
 * Patu plongeur, i. 156.
 * Polonais, i. 144.
 * Romain, i. 142, 144.
 * tambour, i. 154.
 * Turc, i. 139.
 * , origin of, i. 131-134, 180-204;
 * classified table of breeds of, i. 136;
 * pouter, i. 137-139;
 * carrier, i. 139-142;
 * runt, i. 142-144;
 * barbs, i. 144-146;
 * fantail, i. 146-148;
 * turbit and owl, i. 148-149;
 * tumbler, i. 150-153;
 * Indian frill-back, i. 153;
 * Jacobin, i. 154;
 * trumpeter, i. 154;
 * other breeds of, i. 155-157;
 * differences of, equal to generic, i. 157-158;
 * individual variations of, i. 158-160;
 * variability of peculiarities characteristic of breeds in, i. 161;
 * sexual variability in, i. 161-162;
 * osteology of, i. 162-167;
 * correlation of growth in, i. 167-171, ii. 321;
 * young of some varieties naked when hatched, i. 170, ii. 332;
 * effects of disuse in, i. 172-177;
 * settling and roosting in trees, i. 181;
 * floating in the Nile to drink, i. 181;
 * Dovecot, i. 185-186;
 * arguments for unity of origin of, i. 188-204;
 * feral in various places, i. 190, ii. 33;
 * unity of coloration in, i. 195-197;
 * reversion of mongrel, to coloration of, C. livia, i. 197-202;
 * history of the cultivation of, i. 205-207;
 * history of the principal races of, i. 207-212;
 * mode of production of races of, i. 212-224;
 * reversion in, ii. 29, 47;
 * by age, ii. 38;
 * produced by crossing in, ii. 40, 48;
 * prepotency of transmission of character in breeds of, ii. 66-67;
 * sexual differences in some varieties of, ii. 74;
 * period of perfect plumage in, ii. 77;
 * effect of segregation on, ii. 86;
 * preferent pairing of, within the same breed, ii. 103;
 * fertility of, increased by domestication, ii. 112, 155;
 * effects of interbreeding and necessity of crossing, ii. 125-126;
 * indifference of, to change of climate, ii. 161;
 * selection of, ii. 195, 199, 204;
 * among the Romans, ii. 202;
 * unconscious selection of, ii. 211, 214;
 * facility of selection of, ii. 234;
 * white, liable to the attacks of hawks, ii. 230;
 * effects of disuse of parts in, ii. 298;
 * fed upon meat, ii. 304;
 * effect of first male upon the subsequent progeny of the female, i. 405;
 * homology of the leg and wing feathers in, ii. 323;
 * union of two outer toes in feather-legged, ibid.;
 * correlation of beak, limbs, tongue, and nostrils in, ii. 324;
 * analogous variation in, ii. 349-350;
 * permanence of breeds of, ii. 429.
 * , of Swiss lake-dwellings, i. 67-68;
 * types of, derived from Sus scrofa and Sus indica, i. 66-67;
 * Japanese (Sus pliciceps, Gray), figured, i. 69;
 * of Pacific islands, i. 70, ii. 87;
 * modifications, of skull in, i. 71-73;
 * length of intestines in, i. 73, ii. 303;
 * period of gestation of, i. 74;
 * number of vertebræ and ribs in, i. 74;
 * anomalous forms, i. 75-76;
 * development of tusks and bristles in, i. 76;
 * striped young of, i. 76-77;
 * reversion of feral, to wild type, i. 77-78, ii. 33, 47;
 * production and changes of breeds of, by intercrossing, i. 78;
 * effects produced by the first male upon the subsequent progeny of the female, i. 404;
 * two-legged race of, ii. 4;
 * polydactylism in, ii. 14;
 * cross-reversion in, ii. 35;
 * hybrid, wildness of, ii. 45;
 * monstrous development of a proboscis in, ii. 57;
 * disappearance of tusks in male under domestication, ii, 74;
 * solid hoofed, ii. 429;
 * crosses of, ii. 93, 95;
 * mutual fertility of all varieties of, ii. 110;
 * increased fertility by domestication, ii. 111;
 * ill effects of close interbreeding in, ii. 121-122;
 * influence of selection on, ii. 198;
 * prejudice against certain colours in, ii. 210, 229, 336;
 * unconscious selection of, ii. 214;
 * black Virginian, ii. 227, 336;
 * similarity of the best breeds of, ii. 241;
 * change of form in, ii. 279;
 * effects of disuse of parts in, ii. 299;
 * ears of, ii. 301;
 * correlations in, ii. 327;
 * white, buck-wheat injurious to, ii. 337;
 * tail of, grafted upon the back, ii. 369;
 * extinction of the older races of, ii. 426.
 * , ii. 91.
 * , ii. 190.
 * , sterility and variability of the, ii. 262.
 * , Chinese. 322.
 * , bud-variation in, i. 381;
 * improvement of, ii. 216.
 * Pinus pumilio, Mughus, and nana, varieties of P. sylvestris, i. 363.
 * Pinus sylvestris, i. 363, ii. 310;
 * hybrids of, with P. nigricans, ii. 130.
 * , on hereditary disease, ii. 7, 78.
 * Pistacia lentiscus, ii. 274.
 * , rudimentary, in cultivated plants, ii. 316.
 * , sterility of some mongrel pigeons, i. 192;
 * fertility of pigeons, ii. 112.
 * Pisum arvense and sativum, i. 326.
 * versicolor, inheritance of, ii. 79.
 * , G., on a fossil vine, i. 332;
 * sterility of Jussiæa grandifiora in France, ii. 170.
 * tree, variety of the, i. 362.
 * carnivora, general sterility of the, in captivity, ii. 151.
 * , progress of cultivation of, i. 305-312;
 * cultivated, their geographical derivation, i. 311;
 * crossing of, ii. 98, 99, 127;
 * comparative fertility of wild and cultivated, ii. 112-113;
 * self-impotent, ii. 131-140;
 * dimorphic and trimorphic, ii. 132, 140;
 * sterility of, from changed conditions, ii. 163-165;
 * from contabescence of anthers, ii. 165-166;
 * from monstrosities, ii. 166-167;
 * from doubling of the flowers, ii. 167-168;
 * from seedless fruit, ii. 168;
 * from excessive development of vegetative organs, ii. 168-171;
 * influence of selection on, ii. 199-201;
 * variation by selection, in useful parts of, ii. 217-219;
 * variability of, ii. 237;
 * variability of, induced by crossing, ii. 265;
 * direct action of change of climate on, ii. 277;
 * change of period of vegetation in, ii. 304-305;
 * varieties of, suitable to different climates, ii. 306;
 * correlated variability of, ii. 330-331;
 * antiquity of races of, ii. 429.
 * , inheritance of, ii. 241.
 * , F., on the vision of amphibious animals, ii. 223.
 * Platessa flesus, ii. 53.
 * , notice of selection in breeding dogs by, ii. 212.
 * polonica, ii. 276.
 * , on the crossing of shepherd's dogs with the wolf, i. 24;
 * on Pyrrhus' breed of cattle, ii. 202;
 * on the estimation of pigeons among the Romans, i. 205;
 * pears described by, ii. 215.
 * , i. 345-347;
 * stones figured, i. 345;
 * varieties of the, i. 345-346, ii. 219;
 * bud-variation in the, i. 375;
 * peculiar disease of the, ii. 227;
 * flower-buds of, destroyed by bullfinches, ii. 232;
 * purple-fruited, liable to certain diseases, ii. 336.
 * , inherited peculiarities of, in pigeons, i. 160-161;
 * sexual peculiarities of, in fowls, i. 251-255.
 * of races, Pouchet's views on, i. 2.
 * Poa, seeds of, used as food, i. 308;
 * species of, propagated by bulblets, ii. 170.
 * cattle, i. 80.
 * , modification of, i. 42;
 * crossed with the foxhound, ii. 95.
 * sans parchemin, ii. 231.
 * , origin of Cytisus Adami, i. 390;
 * origin of cultivated varieties of fruit-trees, ii. 260.
 * fowl, i. 227, 250, 254, 256-257, 262;
 * skull figured, i. 262;
 * section of skull figured, i. 263;
 * development of protuberance of skull, i. 250;
 * furcula figured, i. 268.
 * , or Himalayan rabbit, i. 108.
 * , ii. 363-364;
 * action of, ii. 108;
 * injurious action of, in some orchids, ii. 134-135;
 * resistance of, to injurious treatment, ii. 164;
 * prepotency of, ii. 187.
 * , Sir F., transmission of variegated leaves in Ballota nigra, i. 383;
 * on local tendency to variegation, ii. 274.
 * , ii. 21.
 * , inheritance of, ii. 12-16;
 * significance of, ii. 16-17.
 * Polyplectron, i. 255.
 * , most frequent on islands and mountains, i. 52;
 * Javanese, i. 53.
 * , Col., on striped Indian horses, i. 58, 59;
 * on the young of Asinus indicus, ii. 43.
 * , Lombardy, i. 361.
 * , on Cuban wild dogs, i. 27.
 * , found in the Swiss lake-dwellings, i. 317, 319;
 * with the stamens converted into pistils, i. 365;
 * differences of the, in different parts of India, ii. 165;
 * monstrous, fertility of, ii. 166;
 * black-seeded, antiquity of, ii. 429.
 * , breeding of, in captivity, ii. 152.
 * family, ii. 4, 76.
 * Porphyrio, breeding of a species of, in captivity, ii. 156.
 * , on a peculiar hereditary affection of the eye, ii. 9.
 * Santo, feral rabbits of, i. 112.
 * Potamochœrus penicillatus, ii. 150.
 * , i. 330-331;
 * bud-variation by tubers in the, i. 384-385;
 * graft-hybrid of, by union of half-tubers, i. 395;
 * individual self-impotence in the, ii. 137;
 * sterility of, ii. 169;
 * advantage of change of soil to the, ii. 146;
 * relation of tubers and flowers in the, ii. 343.
 * , sweet, sterility of the, in China, ii. 169;
 * varieties of the, suited to different climates, ii. 309.
 * , M., his views on plurality of races, i. 2.
 * pigeons, i. 137-139;
 * furcula figured, i. 167;
 * history of, i. 207.
 * , Lord, experiments in crossing humped and English cattle, i. 83, ii. 45.
 * , Mr., on a graft-hybrid rose, i. 396.
 * wolf, i. 22.
 * of highly-improved breeds, ii. 321.
 * of pollen, ii. 187.
 * of transmission of character, ii. 65, 174;
 * in the Austrian emperors and some Roman families, ii. 65;
 * in cattle, ii. 65-66;
 * in sheep, ii. 66;
 * in cats, ibid.;
 * in pigeons, ii. 66-67;
 * in fowls, ii. 67;
 * in plants, ibid.;
 * in a variety of the pumpkin, i. 358;
 * in the jackal over the dog, ii. 67;
 * in the ass over the horse, ibid.;
 * in the pheasant over the fowl, ii. 68;
 * in the penguin duck over the Egyptian goose, ibid.;
 * discussion of the phenomena of, ii. 69-71.
 * , Mr., on the earliest known European flower-garden, ii. 217.
 * , mechanical, a cause of modification, ii. 344-345.
 * and Dumas, on the employment of several spermatozoids to fertilise one ovule, ii. 363.
 * , Mr., variations in the structure of the feet in horses, i. 50.
 * , Dr., on polydactylism in the negro, ii. 14;
 * on the Lambert family, ii. 77;
 * on an albino negro, ii. 229;
 * on Plica polonica, ii. 276.
 * , ii. 21;
 * double, rendered single by transplantation, ii. 167.
 * Primula, intercrossing of species of, i. 336;
 * contabescence in, ii. 166;
 * hose and hose, i. 365;
 * with coloured calyces, sterility of, ii. 166.
 * Primula sinensis, reciprocally dimorphic, ii. 132.
 * Primula veris, ii. 21, 109, 182.
 * Primula vulgaris, ii. 21, 109.
 * , Mr., on the intercrossing of strawberries, i. 352.
 * Procyon, sterility of, in captivity, ii. 152.
 * , increased by domestication, ii. 174.
 * , rapidity of, favourable to selection, ii. 297.
 * , reproduction of the, ii. 376.
 * Prunus armeniaca, i. 344-345.
 * Prunus avium, i. 347.
 * Prunus cerasus, i. 347, 375.
 * Prunus domestica, i. 345.
 * Prunus insititia, i. 345-347.
 * Prunus spinosa, i. 345.
 * , wild horses in, i. 60.
 * Psittacus erithacus, ii. 155.
 * Psittacus macoa, ii. 155.
 * Psophia, general sterility of, in captivity, ii. 157.
 * fowls, i. 228.
 * Pulex penetrans, ii. 275.
 * , i. 357.
 * ponies of the Cordillera, i. 52.
 * , Mr. on Cytisus Adami, i. 389.
 * , Mr., preference of hares and rabbits for common rye, ii. 232.
 * and Vertuch, varieties of the potato, i. 330.
 * , effects of foreign pollen on apples, i. 401;
 * supposed non-variability of monotypic genera, ii. 266.
 * Pyrrhula vulgaris, ii. 232;
 * assumption of the hen-plumage by the male, in confinement, ii. 158.
 * , his breed of cattle, ii. 202.
 * Pyrus, fastigate Chinese species of, ii. 277.
 * Pyrus acerba, i. 348.
 * Pyrus aucuparia, ii. 230.
 * Pyrus communis, i. 350, 376.
 * Pyrus malus, i. 348, 376.
 * Pyrus paradisiaca, i. 348.
 * Pyrus præcox, i. 348.

 * , effect of fecundation by, on the subsequent progeny of a mare, i. 403-404.
 * , A. de, on the burrowing of a bitch to litter, i. 77;
 * selection in the silkworm, i. 301;
 * development of the wings in the silkmoth, i. 303, ii. 298;
 * on varieties of the mulberry, i. 334;
 * special raising of eggs of the silkmoth, ii. 197;
 * on disease of the silkworm, ii. 228;
 * on monstrosities in insects, ii. 269, 391;
 * on the Anglo-Saxon race in America, ii. 276;
 * on a change in the breeding season of the Egyptian goose, ii. 304;
 * fertilisation of the Teredo, ii. 363;
 * tendency to similarity in the best races, ii. 241;
 * on his "tourbillon vital," ii. 61;
 * on the independent existence of the sexual elements, ii. 360.
 * Quercus cerris, i. 363.
 * Quercus robur and pedunculata, hybrids of, ii. 130.
 * , pears grafted on the, ii. 259.

 * , domestic, their origin, i. 103-105;
 * of Mount Sinai and Algeria, i. 105;
 * breeds of, i. 105-111;
 * Himalayan, Chinese, Polish, or Russian, i. 108-111, ii. 97;
 * feral, i. 111-115;
 * of Jamaica, i. 112;
 * of the Falkland islands, i. 112;
 * of Porto Santo, i. 112-115, ii. 103, 279;
 * osteological characters of, i. 115-129;
 * discussion of modifications in, i. 129-130;
 * one-eared, transmission of peculiarity of, ii. 12;
 * reversion in feral, ii. 33;
 * in the Himalayan, ii. 41;
 * crossing of white and coloured Angora, ii. 92;
 * comparative fertility of wild and tame, ii. 111;
 * high-bred, often bad breeders, ii. 121;
 * selection of, ii. 204;
 * white, liable to destruction, ii. 230;
 * effects of disuse of parts in, ii. 298;
 * skull of, affected by drooping ears, ii. 301;
 * length of intestines in, ii. 303;
 * correlation of ears and skull in, ii. 324-325;
 * variations in skull of, ii. 350;
 * periosteum of a dog producing bone in, ii. 369.
 * , origin of, i. 54.
 * , modification and formation of, by crossing, ii. 95-99;
 * natural and artificial, ii. 245;
 * Pouchet's views on plurality of, i. 2;
 * of pigeons, i. 207-212.
 * , i. 326; crossing of, ii. 90;
 * varieties of, ii. 217-218.
 * , W. F., effect of climate and soil on strawberries, i. 354;
 * constitutional differences in roses, i. 367.
 * , retrogressive metamorphosis in mosses and algæ, ii. 361.
 * , Sir Stamford, on the crossing of Javanese cattle with Bos sondaicus, ii. 206.
 * , goat-like, from the Cape of Good Hope, ii. 66.
 * , heredity of diseases, ii. 7.
 * of gallinaceous birds on the Himalaya, i. 237.
 * Ranunculus ficaria, ii. 170.
 * Ranunculus repens, ii. 168.
 * , i. 325.
 * Raphanus sativus, ii. 343.
 * , yellow-fruited, ii. 230.
 * , experiments with poison of the, ii. 289.
 * , stomach of, affected by vegetable diet, ii. 302.
 * , A., self-impotence in hybrids of Gladiolus, ii. 139-140.
 * , Le Compte, on the assumption of a yellow colour by all varieties of maize, i. 321.
 * , effect of confinement upon the cock, ii. 52;
 * fertility of fowls in most climates, ii. 161.
 * , Mr., atrophy of the limbs of rabbits, consequent on the destruction of their nerves, ii. 297.
 * of amputated parts in man, ii. 14;
 * in the human embryo, ii. 15;
 * in the lower vertebrata, insects, and myriapoda, ibid.
 * , individuals recognised by the Laplanders, ii. 251.
 * , early cultivation of the cabbage by the Celts, i. 324.
 * , experiments in crossing Cytisus purpureus and laburnum, i. 389;
 * modification of a Thesium by Œcidium, ii. 284.
 * , characters of, reproduced in children, ii. 34.
 * , occurrence of jaguars with crooked legs in Paraguay, i. 17;
 * naked dogs of Paraguay, i. 23, 31, ii. 93, 102;
 * feral dogs of La Plata, i. 27;
 * on the aguara, i. 26;
 * cats of Paraguay, i. 46, ii. 86, 151;
 * dogs of Paraguay, ii. 87;
 * feral pigs of Buenos Ayres, i. 77;
 * on the refusal of wild animals to breed in captivity, ii. 149;
 * on Dicotyles labiatus, ii. 150;
 * sterility of plantigrade carnivora in captivity, ii. 152;
 * on Cavia aperea, ii. 152;
 * sterility of Cebus azaræ in captivity, ii. 153;
 * abortions produced by wild animals in captivity, ii. 158.
 * , sexual and asexual, contrasted, ii. 361;
 * unity of forms of, ii. 383;
 * antagonism of, to growth, ii. 384.
 * Reseda odorata, ii. 237.
 * , pigmentary, in deaf-mutes, ii. 328.
 * , ii. 28-29, 372-373, 396, 398-402;
 * in pigeons, ii. 29;
 * in cattle, ii. 29-30;
 * in sheep, ii. 30;
 * in fowls, ii. 31;
 * in the heartsease, ibid.;
 * in vegetables, ibid.;
 * in feral animals and plants, ii. 32-34;
 * to characters derived from a previous cross in man, dogs, pigeons, pigs, and fowls, ii. 34-35;
 * in hybrids, ii. 36;
 * by bud-propagation in plants, ii. 36-38;
 * by age in fowls, cattle, &c., ii. 38-39;
 * caused by crossing, ii. 39-51;
 * explained by latent characters, ii. 51-56;
 * producing monstrosities, ii. 57;
 * producing peloric flowers, ii. 58-60;
 * of feral pigs to the wild type, i. 77-78;
 * of supposed feral rabbits to the wild type, i. 104, 111, 115;
 * of pigeons, in coloration, when crossed, i. 197-202;
 * in fowls, i. 239-246;
 * in the silkworm, i. 302;
 * in the pansy, i. 369;
 * in a pelargonium, i. 378;
 * in Chrysanthemums, i. 379;
 * of varieties of the China rose in St. Domingo, i. 380;
 * by buds in pinks and carnations, i. 381;
 * of laciniated varieties of trees to the normal form, i. 382;
 * in variegated leaves of plants, i. 383-384;
 * in tulips, i. 386;
 * of suckers of the seedless barberry to the common form, i. 384;
 * by buds in hybrids of Tropæolum, i. 392;
 * in plants, i. 409;
 * of crossed peloric snapdragons, ii. 71;
 * analogous variations due to, ii. 349-351.
 * , selection practised by the Celts, ii. 202-203.
 * , breeding in captivity in India, ii. 150.
 * Rhododendron, hybrid, ii. 265.
 * Rhododendron ciliatum, ii. 277.
 * Rhododendron Dalhousiæ, effect of pollen of R. Nuttallii upon, i. 400.
 * , not medicinal when grown in England, ii. 274.
 * Ribes grossularia, i. 354-356, 376.
 * Ribes rubrum, i. 376.
 * , number and characters of, in fowls, i. 267;
 * characters of, in ducks, i. 283-284.
 * , Imperial, of China, ii. 205;
 * Indian varieties of, ii. 256;
 * variety of, not requiring water, ii. 305.
 * , H. D., on jaw-appendages in Irish pigs, i. 76;
 * management of pigs in China, i. 68;
 * occurrence of striped young in Westphalian pigs, i. 76;
 * on crossing pigs, ii. 95;
 * on interbreeding pigs, ii. 122;
 * on selection in pigs, ii. 194.
 * , Sir John, observations on the resemblance between North American dogs and wolves, i. 21-22;
 * on the burrowing of wolves, i. 27;
 * on the broad feet of dogs, wolves, and foxes in North America, i. 40;
 * on North American horses scraping away the snow, i. 53.
 * Ricinus, annual in England, ii. 305.
 * , on the "Bagadotte" pigeon, i. 141;
 * on the Jacobin pigeon, i. 154;
 * fertility of hybrid pigeons, i. 192.
 * , ii. 378.
 * , on varieties of the orange, i. 336, ii. 308, 331.
 * , Lord, on the selection of greyhounds, ii. 235.
 * , Mr., persistency of characters in seedling potatoes, i. 331;
 * on the peach, i. 338, 339;
 * persistency of races in the peach and nectarine, i. 339, 340;
 * connexion between the peach and the nectarine, i. 340;
 * persistency of character in seedling apricots, i. 344;
 * origin of the plum, i. 345;
 * seedling varieties of the plum, i. 346;
 * persistency of character in seedling plums, i. 347;
 * bud-variation in the plum, i. 375;
 * plum, attacked by bullfinches, ii. 232;
 * seedling apples with surface-roots, i. 349;
 * variety of the apple found in a wood, ii. 260;
 * on roses, i. 366-367;
 * bud-variation in roses, i. 379-381;
 * production of Provence roses from seeds of the moss-rose, i. 380;
 * effect produced by grafting on the stock in jessamine, i. 394;
 * in the ash, i. 394;
 * on grafted hazels, i. 395;
 * hybridisation of a weeping thorn, ii. 18;
 * experiments with the seed of the weeping elm and ash, ii. 19;
 * variety of the cherry with curled petals, ii. 232.
 * , reproduction of Oncidium Cavendishianum, ii. 133.
 * , Mr., on inheritance in the horse, ii. 10.
 * , Mr., on glandular-leaved peaches, i. 343.
 * , on the silkworm, i. 301-304, ii. 197.
 * Robinia, ii. 274.
 * , Mr., deficiencies of half-bred horses, ii. 11.
 * , Mr., on the advantage of change of soil to plants, ii. 146-147;
 * on the growth of the verbena, ii. 273;
 * on broccoli, ii. 310.
 * pigeon, measurements of the, i. 134;
 * figured, i. 135.
 * , sterility of, in captivity, ii. 152.
 * Rodriguezia, ii. 134, 135.
 * , J., poisoning of horses by mildewed tares, ii. 337.
 * , feral humped cattle in, i. 79.
 * , F., on the history of the peach, ii. 308.
 * , Dutch, i. 151.
 * , Prof., incisor teeth affected in form in cases of pulmonary tubercle, ii. 332.
 * , estimation of pigeons by, i. 205;
 * breeds of fowls possessed by, i. 231, 247.
 * , pied, ii. 77.
 * Rosa, cultivated species of, i. 366.
 * Rosa devoniensis, graft-hybrid produced by, on the white Banksian rose, i. 396.
 * Rosa indica and centifolia, fertile hybrids of, i. 366.
 * Rosa spinosissima, history of the culture of, i. 367.
 * , on Egyptian dogs, i. 17.
 * , i. 366-367;
 * origin of, i. 364;
 * bud-variation in, i. 379-381;
 * Scotch, doubled by selection, ii. 200;
 * continuous variation of, ii. 241;
 * effect of seasonal conditions on, ii. 273;
 * noisette, ii. 308;
 * galls of, ii. 284.
 * rabbit, i. 105.
 * , on the dogs of Juan Fernandez, i. 27;
 * on South American cats, i. 46;
 * striped young pigs, i. 77;
 * feral pigs in South America, i. 78, ii. 33;
 * on Columbian cattle, i. 88, ii. 205, 226;
 * effects of heat on the hides of cattle in South America, i. 92;
 * fleece of sheep in the hot valleys of the Cordilleras, i. 98;
 * diminished fertility of these sheep, ii. 161;
 * on black-boned South American fowls, i. 258;
 * variation of the guinea-fowl in tropical America, i. 294;
 * frequency of striped legs in mules, ii. 42;
 * geese in Bogota, ii. 161;
 * sterility of fowls introduced into Bolivia, ii. 162.
 * , M., on a variety of Magnolia grandiflora, ii. 308.
 * , Dr., Indian varieties of the mulberry, i. 334;
 * on Agave vivipara, ii. 169;
 * variety of rice not requiring irrigation, ii. 305;
 * sheep from the Cape in India, ii. 306.
 * Rubus, pollen of, ii. 268.
 * organs, i. 12, ii. 315-318.
 * de Lavison, extinction of breeds of dogs in France, ii. 425.
 * , general fertility of, in captivity, ii. 150.
 * fowls, i. 230.
 * , i. 142-144;
 * history of, i. 210;
 * lower jaws and skull figured, i. 164-165.
 * or Himalayan rabbit, i. 108.
 * , Prof., dogs of the Neolithic period, i. 19;
 * horses of Swiss lake-dwellings, i. 49;
 * diversity of early domesticated horses i. 51;
 * pigs of the Swiss lake-dwellings, i. 65, 67-68;
 * on humped cattle, i. 80;
 * parentage of European breeds of cattle, i. 80, 81, ii. 427;
 * on "Niata" cattle, i. 89;
 * sheep of the Swiss lake-dwellings, i. 94, ii. 427;
 * goats of the Swiss lake-dwellings, i. 101;
 * absence of fowls in the Swiss lake-dwellings, i. 246;
 * on crossing cattle, ii. 98;
 * differences in the bones of wild and domesticated animals, ii. 279;
 * decrease in size of wild European animals, ii. 427.
 * , wild, De Candolle's observations on, i. 313;
 * found in the Swiss lake-dwellings, i. 319;
 * common, preferred by hares and rabbits, ii. 232;
 * less variable than other cultivated plants, ii. 254.

 * , Mr., on the cultivation of Rosa spinosissima, i. 367;
 * on the cultivation of the dahlia, i. 369-370, ii. 261;
 * effect of foreign pollen on the seed-vessel in Amaryllis vittata, i. 400.
 * , influence of the pelvis on the shape of the kidneys in birds, ii. 344.
 * , wild dogs of, i. 28;
 * bud-variation of dahlias in, i. 385.
 * , Aug., milk furnished by cows in South America, ii. 300;
 * husked form of maize, i. 320.
 * , C., feral cats in Scotland, i. 47;
 * taming of wild ducks, i. 278.
 * apple, singular structure of the, i. 350;
 * artificial fecundation of the, i. 401.
 * Dance, period of appearance of, ii. 77.
 * , origin and varieties of the cherry, i. 347-348;
 * origin of varieties of the apple, i. 350;
 * incapacity of the cucumber for crossing with other species, i. 359;
 * varieties of the melon, i. 360;
 * supposed twin-mongrel melon, i. 391;
 * crossing melons, ii. 108, 129;
 * on gourds, ii. 108;
 * effects of selection in enlarging fruit, ii. 217;
 * on the tendency to depart from type, ii. 241;
 * variation of plants in particular soils, ii. 278.
 * , experiments on the, ii. 293, 341;
 * regeneration of lost parts in the, ii. 15, 376, 385.
 * Salamandra cristata, polydactylism in, ii. 14.
 * , Mr., on the production of nectarines by peach-trees, i. 341;
 * on the dahlia, i. 369-370.
 * Salix, intercrossing of species of, i. 336.
 * Salix humilis, galls of, ii. 282, 283.
 * , feral guinea-fowl in St. Domingo, i. 294.
 * , early breeding of male, ii. 384.
 * , Mr., on bud-variation in pelargoniums, i. 378;
 * in the Chrysanthemum, i. 379;
 * transmission of variegated leaves by seed, i. 383;
 * bud-variation by suckers in Phlox, i. 384;
 * application of selection to bud-varieties of plants, i. 411;
 * accumulative effect of changed conditions of life, ii. 262;
 * on the variegation of strawberry leaves, ii. 274.
 * , S. J., hybrids of Gallus Sonneratii and the common fowl, i. 234, ii. 45;
 * crossing of races or species of rats, ii. 87-88.
 * , on inheritance in cattle, ii. 10.
 * . See.
 * , ascent of the, ii. 296.
 * Saponaria calabrica, ii. 20.
 * , ponies of, i. 52.
 * , on the development of the hydroida, ii. 368.
 * of the stigma, i. 402-403.
 * Saturnia pyri, sterility of, in confinement, ii. 157.
 * , on the management of prize gooseberries, i. 356.
 * , varieties of the goldfish, i. 296.
 * , their indiscriminate use of plants as food, i. 307-310;
 * fondness of, for taming animals, ii. 160.
 * , effect of foreign pollen on maize, i. 400.
 * Saxifraga geum, ii. 166.
 * , on carrier-pigeons, i. 141;
 * on a pigeon which utters the sound "Yahu," i. 155.
 * (pigeons), i. 142, 143.
 * , remains of Bos frontosus found in, i. 81.
 * , characters of, in rabbits, i. 123;
 * in fowls, i. 268;
 * in pigeons, i. 167;
 * alteration of, by disuse, in pigeons, i. 175.
 * fever, ii. 276.
 * , on the horses represented in Greek statues, ii. 213.
 * , H., on adventitious buds, ii. 384.
 * , excess of nourishment a cause of variability, ii. 257.
 * , Sir R., on the dogs of the Indians of Guiana, i. 19, 23, ii. 206;
 * on the musk duck, i. 182;
 * bud-variation in the Banana, i. 377;
 * reversion of varieties of the China rose in St. Domingo, i. 380;
 * sterility of tame parrots in Guiana, ii. 155;
 * on Dendrocygna viduata, ii. 157;
 * selection of fowls in Guiana, ii. 209.
 * , on Proteus, ii. 297.
 * Sciuropterus volucella, ii. 152.
 * Sciurus palmarum and cinerea, ii. 152.
 * , P. L., on Asinus tæniopus, i. 62, ii. 41;
 * on Asinus indicus, ii. 42;
 * striped character of young wild pigs, i. 70;
 * osteology of Gallinula nesiotis, i. 287;
 * on the black-shouldered peacock, i. 290;
 * on the breeding of birds in captivity, ii. 157.
 * , Dr., varieties of the dog, found in a cave, i. 19.
 * fir, local variation of, i. 363.
 * kail and cabbage, cross between, ii. 98.
 * , John, irregularities in the sex of the flowers of Maize, i. 321;
 * bud-variation in Imatophyllum miniatum, i. 385;
 * crossing of species of Verbascum, ii. 106-107;
 * experiments on crossing Primulæ, ii. 109;
 * reproduction of orchids, ii. 133;
 * fertility of Oncidium divaricatum, ii. 164;
 * acclimatisation of the sweet pea in India, ii. 311;
 * number of seeds in Acropera and Gongora, ii. 379.
 * , Sir W., former range of wild cattle in Britain, i. 85.
 * , on the Scotch deerhound, ii. 73, 121.
 * , Sir John, effects of close interbreeding in dogs, ii. 121;
 * care taken by, in selection of fowls, ii. 197.
 * Secale cereale, ii. 254.
 * , effects of crossing on the female, i. 404;
 * on the "Porcupine-man," ii. 4;
 * on hereditary diseases, ii. 7;
 * hereditary affections of the eye, ii. 9, 78-79;
 * inheritance of polydactylism and anomalies of the extremities, ii. 13-14;
 * morbid uniformity in the same family, ii. 17;
 * on deaf-mutes, ii. 22;
 * inheritance of injury to the eye, ii. 24;
 * atavism in diseases and anomalies of structure, ii. 34;
 * non-reversion to night-blindness, ii. 36;
 * sexual limitation of the transmission of peculiarities in man, ii. 72-73;
 * on the effects of hard-drinking, ii. 289;
 * inherited baldness with deficiency of teeth, ii. 326-327;
 * occurrence of a molar tooth in place of an incisor, ii. 391;
 * diseases occurring in alternate generations, ii. 401.
 * , on the removal of portions of bone, ii. 296.
 * , early selection of, ii. 204;
 * rudimentary, in grapes, ii. 316;
 * relative position of, in the capsule, ii. 345.
 * and buds, close analogies of, i. 411.
 * , crossing of the wolf and Esquimaux dog, i. 22.
 * , on the bud-destroying habits of the bullfinch, ii. 232.
 * , ii. 192-249;
 * methodical, i. 214, ii. 194-210;
 * by the ancients and semi-civilised people, ii. 201-210;
 * of trifling characters, ii. 208-210;
 * unconscious, i. 214, 217, ii. 174, 210-217;
 * effects of, shown by differences in most valued parts, ii. 217-220;
 * produced by accumulation of variability, ii. 220-223;
 * natural, as affecting domestic productions, ii. 185-189, 224-233;
 * as the origin of species, genera and other groups, ii. 429-432;
 * circumstances favourable to, ii. 233-239;
 * tendency of towards extremes, ii. 239-242;
 * possible limit of, ii. 242;
 * influence of time on, ii. 243-244;
 * summary of subject, ii. 246-249;
 * effects of, in modifying breeds of cattle, i. 92, 93;
 * in preserving the purity of breeds of sheep, i. 99-100;
 * in producing varieties of pigeons, i. 213-218;
 * in breeding fowls, i. 232-233;
 * in the goose, i. 289;
 * in the canary, i. 295;
 * in the goldfish, i. 296;
 * in the silkworm, i. 300-301;
 * contrasted in cabbages and cereals, i. 323;
 * in the white mulberry, i. 334;
 * on gooseberries, i. 356;
 * applied to wheat, i. 317-318;
 * exemplified in carrots, &c., i. 326;
 * in the potato, i. 331;
 * in the melon, i. 360;
 * in flowering plants, i. 365;
 * in the hyacinth, i. 371;
 * applied to bud-varieties of plants, i. 411;
 * illustrations of, ii. 421-428.
 * , sexual, ii. 75.
 * in plants, ii. 131-140;
 * in individual plants, ii. 136-138;
 * of hybrids, ii. 174.
 * , Mr., on the Dingo, i. 26.
 * , on hybrid ducks, i. 190, ii. 46, 157;
 * hybrid of the hook-billed duck and Egyptian goose, i. 282.
 * , on the St. Valery apple, i. 350.
 * Melon, i. 360.
 * , Olivier de, wild poultry in Guiana, i. 237.
 * , white-seeded, antiquity of the, ii. 429.
 * Setaria, found in the Swiss lake-dwellings, i. 317.
 * , degeneration of, in India, i. 38;
 * Youatt's remarks on, i. 41.
 * , secondary characters of, latent, ii. 51-52;
 * of parents, influence of, on hybrids, ii. 267.
 * characters, sometimes lost in domestication, ii. 74.
 * limitation of characters, ii. 71-75.
 * peculiarities, induced by domestication in sheep, i. 95;
 * in fowls, i. 251-257;
 * transfer of, i. 255-257.
 * variability in pigeons, i. 161-162.
 * selection, ii. 75.
 * , i. 335.
 * , Mr., on the moss-rose, i. 379-380.
 * fowls, i. 227.
 * sheep, their fecundity, i. 97.
 * ponies, striped, i. 58.
 * , disputed origin of, i. 94;
 * early domestication of, i. 94;
 * large-tailed, i. 94, 95, 98, ii. 279;
 * variations in horns, mammæ and other characters of, i. 95;
 * sexual characters of, induced by domestication, i. 95, 96;
 * adaptation of, to climate and pasture, i. 96, 97;
 * periods of gestation of, i. 97;
 * effect of heat on the fleece of, i. 98-99, ii. 278;
 * effect of selection on, i. 99-101;
 * "ancon" or "otter" breeds of, i. 17, 92, 100;
 * "Mauchamp-merino," i. 100-101;
 * cross of German and merino, ii. 85-89;
 * black, of the Tarentino, ii. 227;
 * Karakool, ii. 278;
 * Jaffna, with callosities on the knees, ii. 302;
 * Chinese, ii. 315;
 * Danish, of the bronze period, ii. 427;
 * polydactylism in, ii. 14;
 * occasional production of horns in hornless breeds of, ii. 30;
 * reversion of colour in, ii. 30;
 * influence of male, on offspring, ii. 68;
 * sexual differences in, ii. 73;
 * influence of crossing or segregation on, ii. 86, 95-96, 102-103;
 * interbreeding of, ii. 119-120;
 * effect of nourishment on the fertility of, ii. 111-112;
 * diminished fertility of, under certain conditions, ii. 161;
 * unconscious selection of, ii. 213;
 * natural selection in breeds of, ii. 224, 225, 227;
 * reduction of bones in, ii. 242;
 * individual differences of, ii. 251;
 * local changes in the fleece of, in England, ii. 278;
 * partial degeneration of, in Australia, ii. 278;
 * with numerous horns, ii. 291;
 * correlation of horns and fleece in, ii. 326;
 * feeding on flesh, ii. 303;
 * acclimatisation of, ii. 305-306;
 * mountain, resistance of, to severe weather, ii. 312;
 * white, poisoned by Hypericum crispum, ii. 337.
 * dogs resembling wolves, i. 24.
 * , sinistral and dextral, ii. 53.
 * , Mr. new varieties of wheat, i. 315, 317;
 * on crossing wheat, ii. 104-105;
 * continuous variation of wheat, ii. 241.
 * , cats of, i. 47; horses of, i. 53.
 * , E. P., on the fallow-deer, ii. 103, 120.
 * , D., hybrids of the domestic cat and Felis ornata, i, 45.
 * , northern range of wild horses in, i. 52.
 * , J., on the deafness of white cats with blue eyes, ii. 329.
 * , S., on the pedigrees of pigs, ii. 3;
 * on cross-reversion in pigs, ii. 35;
 * period of gestation in the pig, i. 74;
 * production of breeds of pigs by intercrossing, i. 78, 95;
 * fertility of the pig, ii. 112;
 * effects of interbreeding on pigs, ii. 121-122;
 * on the colours of pigs, ii. 210, 229.
 * , on the sweet potato, ii. 309.
 * , von Carl, on parthenogenesis, ii. 364.
 * Silene, contabescence in, ii. 166.
 * , i. 230, ii. 67, 69.
 * , Arrindy, ii. 306, 312;
 * Tarroo, ii. 157.
 * , i. 300-304;
 * domesticated species of, i. 300;
 * history of, ibid.;
 * causes of modification in, i. 300-301;
 * differences presented by, i. 301-304;
 * crossing of, ii. 98;
 * disease in, ii. 228;
 * effects of disuse of parts in, ii. 298;
 * selection practised with, ii. 197, 199;
 * variation of, ii. 236;
 * parthenogenesis in, ii. 364.
 * , variations of, i. 301-302;
 * yielding white cocoons, less liable to disease, ii. 336.
 * rabbit, i. 108, 111, 120.
 * , J. B., period of maturity in various breeds of cattle, i. 87;
 * differences in the periods of dentition in sheep, i. 96;
 * on the teeth in cattle, sheep, &c., ii. 322;
 * on the breeding of superior rams, ii. 196.
 * , on the raising of eggs of the silk-moth in China, ii. 197.
 * , Sir J., regenerative power of the human embryo, ii. 15.
 * Siredon, breeding in the branchiferous stage, ii. 384.
 * , breeding in captivity, ii. 154.
 * Sivatherium, resemblance of the, to Niata cattle, i. 89.
 * , difference of, an obstacle to crossing, ii. 101.
 * , and its appendages, homologous, ii. 325;
 * hereditary affections of the, ii. 79.
 * , R. S., on pigeons settling on trees in Egypt, i. 181.
 * , characters of the, in breeds of dogs, i. 34;
 * in breeds of pigs, i. 71;
 * in rabbits, i. 116-120, 127;
 * in breeds of pigeons, i. 163-165;
 * in breeds of fowls, i. 260-266;
 * in ducks, i. 282-283.
 * and horns, correlation of the, ii. 333.
 * , ii. 154.
 * , on the Cheetah, ii. 151.
 * , i. 345.
 * , ii. 378.
 * (pigeon), i. 156.
 * , Sir A., on Caffrarian cattle, i. 88;
 * on the use of numerous plants as food in South Africa, i. 307.
 * , Colonel Hamilton, on the odour of the jackal, i. 30;
 * on the origin of the dog, i. 16;
 * wild dogs in St. Domingo, i. 28;
 * on the Thibet mastiff and the alco, i. 28-29;
 * development of the fifth toe in the hind feet of mastiffs, i. 35;
 * differences in the skull of dogs, i. 34;
 * history of the pointer, i. 42;
 * on the ears of the dog, ii. 301;
 * on the breeds of horses, i. 49;
 * origin of the horse, i. 51;
 * dappling of horses, i. 55;
 * striped horses in Spain, i. 58;
 * original colour of the horse, i. 60;
 * on horses scraping away snow, i. 52;
 * on Asinus hemionus, ii. 43;
 * feral pigs of Jamaica, i. 77-78.
 * , Sir J. E., production of nectarines and peaches by the same tree, i. 340;
 * on Viola amœna, i. 368;
 * sterility of Vinca minor in England, ii. 170.
 * , J., development of the ovary in Bonatea speciosa, by irritation of the stigma, i. 403.
 * , N. H., influence of the bull "Favourite" on the breed of Short-horn cattle, ii. 65.
 * , W., on the inter-crossing of strawberries, i. 352.
 * , ii. 87, 88.
 * , form of the viscera in, ii. 344.
 * , bud-variation in, i. 381;
 * non-inheritance of colour in, ii. 21;
 * peloric, crossed with the normal form, ii. 70, 93;
 * asymmetrical variation of the, ii. 322.
 * , adaptation of plums to, i. 346;
 * influence of, on the zones of pelargoniums, i. 366;
 * on roses, i. 367;
 * on the variegation of leaves, i. 383;
 * advantages of change of, ii. 146-148.
 * and climate, effects of, on strawberries, i. 353.
 * Solanum, non-intercrossing of species of, ii. 91.
 * Solanum tuberosum, i. 330-331.
 * pigs, i. 75.
 * , his stud of horses, i. 55.
 * , Lord, on the fleece of Merino sheep, i. 99;
 * on crossing sheep, ii. 120;
 * on selection of sheep, ii. 195;
 * diminished fertility of Merino sheep brought from Spain, ii. 161.
 * fowls, i. 230, 256.
 * , Ferdinand de, on the cultivation of native plants in Florida, i. 312.
 * Sorghum, i. 371.
 * , hawthorn monogynous in, i. 364.
 * , on feral rabbits in Lipari, i. 113;
 * experiments on salamanders, ii. 15, 293, 385;
 * experiments in feeding a pigeon with meat, ii. 304.
 * , in India, i. 38;
 * King Charles's, i. 41;
 * degeneration of, caused by interbreeding, ii. 121.
 * fowls, i. 227, 250, 253;
 * figured, i. 226;
 * early development of sexual characters in, i. 250, 251;
 * furcula of, figured, i. 268.
 * , difficulty of distinguishing from varieties, i. 4;
 * conversion of varieties into, i. 5;
 * origin of, by natural selection, ii. 414-415;
 * by mutual sterility of varieties, ii. 185-189.
 * , Lord, on selection in breeding, ii. 195.
 * , Herbert, on the "survival of the fittest," i. 6;
 * increase of fertility by domestication, ii. 111;
 * on life, ii. 148, 177;
 * changes produced by external conditions, ii. 281;
 * effects of use on organs, ii. 295, 296;
 * ascent of the sap in trees, ii. 296;
 * correlation exemplified in the Irish elk, ii. 333-334;
 * on "physiological units," ii. 375;
 * antagonism of growth and reproduction, ii. 384;
 * formation of ducts in plants, ii. 300.
 * of the cephalopoda, ii. 383.
 * , ii. 363-364;
 * apparent independence of, in insects, ii. 384.
 * , sterility of, in captivity, ii. 157.
 * , on the injurious effect produced by flowering buckwheat on white pigs, ii. 337.
 * dog, i. 31.
 * , W. C., cross-breeding of sheep, i. 100, ii. 95-96, 120;
 * on the effects of crossing, ii. 96-97;
 * on crossing cattle, ii. 118;
 * individual sterility, ii. 162.
 * , reproduction of abnormal forms by, i. 383.
 * , i. 373; in pigeons, i. 213.
 * pigeon, i. 156, 207.
 * , C. K., on dichogamous plants, ii. 90;
 * on the hollyhock, ii. 107;
 * on the functions of flowers, ii. 175.
 * , Mr., inheritance of cleft-palate and hare-lip, ii. 24.
 * , of fowls, i. 255;
 * development of, in hens, ii. 318.
 * , i. 357.
 * , hereditary, ii. 9.
 * , generally sterile in captivity, ii. 152.
 * , flying, breeding in confinement, ii. 152.
 * " Taube," i. 161.
 * , one-horned, supposed heredity of character in, ii. 12;
 * degeneracy of, in the Highlands, ii. 208.
 * , occurrence of rudimentary, ii. 316;
 * conversion of, into pistils, i. 365;
 * into petals, ii. 392.
 * Staphylea, ii. 168.
 * , Prof., on the dog of the Danish Middens, i. 18;
 * on the obliquity of flounders, ii. 53.
 * , J., on hereditary diseases, ii. 7, 79.
 * , in dogs, consequent on close confinement, i. 32;
 * comparative, of crosses, ii. 103, 104;
 * from changed conditions of life, ii. 148-165;
 * occurring in the descendants of wild animals bred in captivity, ii. 160;
 * individual, ii. 162;
 * resulting from propagation by buds, cuttings, bulbs, &c., ii. 169;
 * in hybrids, ii. 178-180, 386, 410-411;
 * in specific hybrids of pigeons, i. 193;
 * as connected with natural selection, ii. 185-189.
 * , characters of the, in rabbits, i. 123;
 * in pigeons, i. 167, 174-175;
 * in fowls, i. 268, 273;
 * effects of disuse on the, i. 174-175, 273.
 * , J. F., on the habits of the Bombycidæ, i. 303.
 * , H., on hereditary disease, ii. 79.
 * , variation of the, in cultivated Cucurbitaceæ, i. 359;
 * satiation of the, i. 402-403.
 * , bud-variation in, i. 381;
 * effect of crossing upon the colour of the seed of, i. 398-399;
 * true by seed, ii. 20;
 * crosses of, ii. 93;
 * varieties of, produced by selection, ii. 219;
 * reversion by the upper seeds in the pods of, ii. 347-348.
 * , fruit-trees of, ii. 307.
 * , Prof., calculation of the chance of transmission of abnormal peculiarities in man, ii. 5.
 * , variations in the production of, by strawberries, i. 353.
 * , structure of the, affected by food, ii. 302.
 * in the bladder, hereditary, ii. 8, 79.
 * , i. 351-354;
 * remarkable varieties of, i. 352-353;
 * hautbois, diœcious, i. 353;
 * selection in, ii. 200;
 * mildew of, ii. 228;
 * probable further modification of, ii. 243;
 * variegated, effects of soil on, ii. 274.
 * , A., on the domestication of Anser ferus, i. 287;
 * on the colour of the bill and legs in geese, i. 288.
 * Strictœnas, i. 183.
 * on young of wild swine, i. 76;
 * of domestic pigs of Turkey, Westphalia, and the Zambesi, i. 76-77;
 * of feral swine of Jamaica and New Granada, i. 77;
 * of fruit and flowers, i. 400, ii. 37;
 * in horses, i. 56-60;
 * in the ass, i. 62-63;
 * production of, by crossing species of Equidæ, ii. 42-43.
 * Strix grallaria, ii. 302.
 * Strix passerina, ii. 154.
 * "," i. 155.
 * , Mr., osteology of the feet in solid-hoofed pigs, i. 75;
 * on polydactylism, ii. 13-14.
 * , prepotency of transmission of characters in sheep and cattle, ii. 66;
 * absorption of the minority in crossed races, ii. 88;
 * correlation of twisted horns and curled wool in sheep, ii. 326.
 * , wild, of Columba livia and other pigeons, i. 204.
 * , geological, of organisms, i. 11.
 * , bud-variation by, i. 384.
 * cane, sterility of, in various countries, ii. 169;
 * white, liability of, to disease, ii. 228, 336.
 * , hereditary tendency to, ii. 7, 78.
 * , Admiral, on the horses of the Falkland Islands, i. 53;
 * wild pigs of the Falkland Islands, i. 77;
 * feral cattle of the Falkland Islands, i. 86, 102;
 * feral rabbits of the Falkland Islands, i. 112.
 * fowl, i. 228, 255.
 * Sus indica, i. 65, 67-70, ii. 110.
 * Sus pliciceps, i. 69 (figured).
 * Sus scrofa, i. 65, 66, ii. 110.
 * Sus scrofa palustris, i. 68.
 * Sus vittatus, i. 67.
 * , a breed of pigeons, i. 156.
 * , Mr., on artificial crossing of varieties of the pea, i. 397.
 * Peas, ii. 91;
 * crosses of, ii. 93, 94;
 * varieties of, coming true by seed, ii. 20;
 * acclimatisation of, in India, ii. 311.
 * William, bud-variation in, i. 381.
 * , R., on Chinese pigeons, i. 28, 206;
 * on striped Chinese horses, i. 59.
 * , ancient dogs of, i. 19;
 * pigs of, in the Neolithic period, i. 67-68;
 * goats of, i. 101.
 * , pale-leaved variety of the, ii. 330.
 * , Colonel, on a Pariah dog with crooked legs, i. 17;
 * on small Indian asses, i. 62;
 * on Gallus Sonneratii, i. 233;
 * on the voice of the Indian Kulm cock, i. 259;
 * fertility of the fowl in most climates, ii. 161.
 * , hereditary departures from, ii. 12.
 * Symphytum, variegated, i. 384.
 * , hereditary, ii. 332.
 * , asses of, i. 62.
 * Syringa persica, chinensis, and vulgaris, ii. 164.

 * , on the care taken by the Celts in breeding animals, ii. 202.
 * Tagetes signata, dwarf variety of, ii. 20.
 * , varieties of cultivated plants in, ii. 256.
 * , occasional development of, in man, ii. 57;
 * never curled in wild animals, ii. 301;
 * rudimentary in Chinese sheep, ii. 315.
 * , numbers of, in breeds of pigeons, i. 158-159;
 * peculiarities of, in cocks, i. 254-255;
 * variability of, in fowls, i. 258;
 * curled, in Anas boschas, and tame drakes, i. 280.
 * , hereditary, ii. 7.
 * , Earl of, on Chillingham cattle, i. 84, ii. 119.
 * , Prof., effects of disuse of parts in cattle, ii. 299.
 * , sterility of the, in captivity, ii. 150.
 * , on cultivated plants, i. 306;
 * on the vine, i. 332;
 * varieties of the peach, i. 342;
 * origin and varieties of the plum, i. 345;
 * origin of the cherry, i. 347;
 * origin of roses, i. 366.
 * , variability of the, in fowls, i. 259;
 * reproduction of the, in a thrush, ii. 15.
 * , their preference for spiral-horned sheep, ii. 209.
 * , abundance of pigeons in Persia, i. 205.
 * Taxus baccata, ii. 18.
 * , Mr., reversion in fowls, ii. 38.
 * , number and position of, in dogs, i. 34;
 * deficiency of, in naked Turkish dogs, i. 35;
 * period of appearance of, in breeds of dogs, i. 35;
 * precocity of, in highly bred animals, ii. 322;
 * correlation of, with hair, ii. 326;
 * double row of, with redundant hair, in Julia Pastrana, ii. 328;
 * affected in form by hereditary syphilis and by pulmonary tubercle, ii. 332;
 * fusion of, ii. 341;
 * developed on the palate, ii. 391.
 * , Mr., on a cat with monstrous teeth, i. 48;
 * on a swift-like pigeon, i. 157;
 * naked young of some pigeons, i. 170;
 * fertility of hybrid pigeons, i. 192;
 * on white pigeons, ii. 230;
 * reversion in crossed breeds of fowls, i. 239-244;
 * chicks of the white silk-fowl, i. 249;
 * development of the cranial protuberance in Polish fowls, i. 250;
 * on the skull in the Polish fowl, i. 257, 262;
 * on the intelligence of Polish fowls, i. 264;
 * correlation of the cranial protuberance and crest in Polish fowls, i. 274;
 * development of the web in the feet of Polish fowls, i. 259;
 * early development of several peculiarities in Spanish cocks, i. 250;
 * on the comb in Spanish fowls, i. 253;
 * on the Spanish fowl, ii. 306;
 * varieties of game-fowls, i. 252;
 * pedigrees of game-fowls, ii. 3;
 * assumption of female plumage by a game cock, i. 253;
 * natural selection in the game cock, ii. 225;
 * pugnacity of game hens, i. 256;
 * length of the middle toe in Cochin fowls, i. 259;
 * origin of the Sebright bantam, ii. 54;
 * differences in the size of fowls, i. 257;
 * effect of crossing in fowls, i. 258, ii. 96;
 * effects of interbreeding in fowls, ii. 124-125;
 * incubation by mongrels of non-sitting races of fowls, ii. 44;
 * inverse correlation of crest and comb in fowls, i. 274;
 * occurrence of pencilled feathers in fowls, ii. 40;
 * on a variety of the goose from Sebastopol, i. 289;
 * on the fertility of the peahen, ii. 112;
 * on the intercrossing of bees, ii. 126.
 * , origin of domestic cats, i. 43;
 * origin of domestic pigeons, i. 180;
 * on Columba guinea, i. 182;
 * on Columba leucocephala, i. 183;
 * asserted reluctance of some breeds of pigeons to cross, i. 192;
 * sterility of hybrid turtle-doves, i. 193;
 * variations of Gallus bankiva, i. 235;
 * on a buff-coloured breed of Turkeys, i. 293;
 * number of eggs laid by the peahen, ii. 112;
 * breeding of Guans in captivity, ii. 156;
 * behaviour of grouse in captivity, ibid.;
 * sterility of the partridge in captivity, ibid.
 * in Cucurbitaceæ, i. 358, ii. 316.
 * , Sir J. E., on the goose, i. 287;
 * on the growth of the apple in Ceylon, ii. 277;
 * on the Jaffna sheep, ii. 302.
 * Teredo, fertilisation in, ii. 363.
 * , wry-legged, ii. 245;
 * white, subject to distemper, ii. 336.
 * , on a husked form of maize, i. 320.
 * , on the period of gestation of the dog, i. 29;
 * of the pig, i. 74;
 * in cattle, i. 87;
 * experiments on change of soil, ii. 147.
 * Tetrao, breeding of species of, in captivity, ii. 156.
 * Tetrapteryx paradisea, ii. 156.
 * Teucrium campanulatum, pelorism in, ii. 345.
 * , feral cattle in, i. 85.
 * , his notice of the domestic fowl, i. 246.
 * , his notice of the peach, ii. 308.
 * Thesium, ii. 284.
 * , Mr., on the peach and nectarine, i. 342;
 * on the varieties of the apricot, i. 344;
 * classification of varieties of cherries, i. 347-348;
 * on the "Sister ribston-pippin," i. 350;
 * on the varieties of the gooseberry, i. 354, 355.
 * , William, on the pigeons of Islay, i. 184;
 * feral pigeons in Scotland, i. 190;
 * colour of the bill and legs in geese, i. 288;
 * breeding of Tetrao scotius in captivity, ii. 156;
 * destruction of black-fowls by the osprey, ii. 230.
 * , Prof. W., on the obliquity of the flounder, ii. 53.
 * , reconversion of, into branches, in pear trees, ii. 318.
 * , grafting of early and late, i. 363;
 * Glastonbury, i. 364.
 * , asserted reproduction of the tarsus in a, ii. 15.
 * Thuja pendula or filiformis, a variety of T. orientalis, i. 362.
 * , on the division of the zoospores of an alga, ii. 378.
 * , G. H., on the cats of Ceylon, i. 46;
 * on a twin seed of Fuchsia coccinea and fulgens, i. 391.
 * , experiments in rearing wild ducks, i. 278.
 * , rarely fertile in captivity, ii. 150, 151.
 * Tigridia conchiflora, bud-variation in, i. 386.
 * , importance of, in the production of races, ii. 243.
 * , self-impotence in the potato, ii. 137.
 * , affinity of, for special organic substances, ii. 380.
 * , destructive to thin-shelled walnuts, i. 356;
 * attacking nuts, i. 357;
 * attacking peas, ii. 231.
 * , crossing of varieties of, ii. 108;
 * cultivation of in Sweden, ii. 307.
 * , red-coloured cats of, i. 47.
 * , relative length of, in fowls, i. 259;
 * development of fifth in dogs, ii. 317.
 * , Mr., his selection of cattle, ii. 199.
 * , ii. 91.
 * . See Titmice.
 * , relation of, to the beak in pigeons, i. 168.
 * , occurrence of a molar, in place of an incisor, ii. 391.
 * "," i. 68.
 * , R., on the union of half-tubers of different kinds of potatoes, i. 395.
 * , varieties of, suddenly produced, i. 361;
 * weeping or pendulous, i. 361;
 * fastigate or pyramidal, i. 361;
 * with variegated or changed foliage, i. 362;
 * early or late in leaf, i. 362-363;
 * forest, non-application of selection to, ii. 237.
 * "" (pigeons), i. 146.
 * , on reproduction in Hydra, ii. 359.
 * "" silkworms, i. 301-302.
 * Trichosanthes anguina, i. 360.
 * , inheritance of, ii. 6-7, 395.
 * Trifolium minus and repens, ii. 164.
 * plants, conditions of reproduction in, ii. 181-184.
 * , H. B., selection of the dromedary, ii. 205-206.
 * Triticum dicoccum, i. 319.
 * Triticum monococcum, i. 319.
 * Triticum spelta, i. 319.
 * Triticum turgidum, i. 319.
 * Triticum vulgare, wild in Asia, i. 312.
 * , breeding in the branchiferous stage, ii. 384.
 * "," i. 154.
 * "" pigeon, i. 144.
 * Tropæolum, ii. 38.
 * Tropæolum minus and majus, reversion in hybrids of, i. 392.
 * , Prince, experiments with pear-trees at Moscow, ii. 307.
 * , Prof., pathological resemblance of twins, ii. 252.
 * pigeon, i. 154;
 * known in 1735, i. 207.
 * , H. A. de, graft-hybrid produced by inosculation in the vine, i. 395.
 * , on the naked Peruvian dog, i. 23;
 * extinct varieties of maize from Peruvian tombs, i. 320, ii. 425.
 * , bud-variation by, i. 384-385.
 * , Mr., sterility of Carex rigida, ii. 170.
 * ducks, i. 281.
 * , variability of, i. 370;
 * bud-variation in, i. 385-386;
 * influence of soil in "breaking," i. 385.
 * pigeon, i. 150-153;
 * short-faced, figured, i. 152;
 * skull figured, i. 163;
 * lower jaw figured, i. 165;
 * scapula and furcula figured, i. 167;
 * early known in India, i. 207;
 * history of, i. 209;
 * sub-breeds of, i. 220;
 * young unable to break the egg-shell, ii. 226;
 * probable further modification of, ii. 242.
 * "" (pigeons), i. 150.
 * , ovarian, occurrence of hairs and teeth in, ii. 370;
 * polypoid, origin of, ii. 381.
 * "," i. 139.
 * (pigeon), i. 148.
 * , domestic, origin of, i. 292-293;
 * crossing of with North American wild Turkey, i. 292-293;
 * breeds of, i. 293;
 * crested white cock, i. 293;
 * wild, characters of, i. 293-294;
 * degeneration of, in India, i. 294, ii. 278;
 * failure of eggs of, in Delhi, ii. 161;
 * feral on the Parana, i. 190;
 * change produced in by domestication, ii. 262.
 * , striped young pigs in, i. 76.
 * (pigeon), i. 156.
 * , W., on compensation in arteries and veins, ii. 300;
 * on cells, ii. 370.
 * , origin of, i. 325;
 * reversion in, ii. 31;
 * run wild, ii. 33;
 * crosses of, ii. 93, 96;
 * Swedish, preferred by hares, ii. 232;
 * acclimatisation of, in India, ii. 311.
 * , on an Egyptian monument, i. 17;
 * crosses of the, ii. 92.
 * , white and coloured, crossing of, ii. 92.
 * Turtur auritus, hybrids of, with T. cambayensis and T. suratensis, i. 194.
 * Turtur risorius, crossing of, with the common pigeon, i. 193;
 * hybrid of, with T. vulgaris, ibid.
 * Turtur suratensis, sterile hybrids of, with T. vulgaris, i. 193;
 * hybrids of, with T. auritus, i. 194.
 * Turtur vulgaris, crossing of, with the common pigeon, i. 193;
 * hybrid of, with T. risorius, ibid.;
 * sterile hybrids of, with T. suratensis and Ectopistes migratorius, ibid.
 * of wild and domesticated pigs, i. 76, 77.
 * Tussilago farfara, variegated, i. 384.
 * Fuchsia coccinea and fulgens, i. 391.
 * , B., on the pigs of the Pacific islands, i. 70, ii. 87;
 * on the dogs of the Pacific islands, ii. 87.
 * , Mr., on the prohibition of consanguineous marriages, ii. 122-123.

 * , development of the, ii. 300.
 * Ulex, double-flowered, ii. 167.
 * Ulmus campestris and effusa, hybrids of, ii. 130.
 * of character, maintained by crossing, ii. 85-90.
 * of the body, functional independence of the, ii. 368-371.
 * or plurality of origin of organisms, i. 13.
 * poison, ii. 380.
 * , secretion of, ii. 380.
 * and disuse of parts, effects of, ii. 295-303, 352-353, 418-419;
 * in rabbits, i. 124-128;
 * in ducks, i. 284-286.
 * , considerations of, leading to uniformity, ii. 241.

 * , experimental production of double monsters by, ii. 340.
 * Vallota, ii. 139.
 * , Barbara, a hairy-faced woman, ii. 4.
 * on wild fruit-trees, i. 312, ii. 260;
 * production of varieties of the vine, i. 333;
 * correlated variability in fruit-trees, ii. 330;
 * production of almond-like fruit by peach-seedlings, i. 339.
 * Vanessa, species of, not copulating in captivity, ii. 157.
 * , i. 4, ii. 371-373, 394-397, 406-420;
 * causes of, ii. 250-270;
 * correlated, ii. 319-338, 353-355, 419-420;
 * law of equable, ii. 351-352;
 * necessity of, for selection, ii. 192;
 * of selected characters, ii. 238-239;
 * of multiple homologous parts, ii. 342.
 * , laws of, ii. 293-356;
 * continuity of, ii. 241;
 * possible limitation of, ii. 242, 416-417;
 * in domestic cats, i. 45-48;
 * origin of breeds of cattle by, i. 88;
 * in osteological characters of rabbits, i. 115-130;
 * of important organs, i. 359;
 * analogous or parallel, i. 348-352;
 * in horses, i. 55;
 * in the horse and ass, i. 64;
 * in fowls, i. 243-246;
 * in geese, i. 288;
 * exemplified in the production of fleshy stems in cabbages, &c., i. 326;
 * in the peach, nectarine, and apricot, i. 342, 344;
 * individual, in wheat, i. 314.
 * of foliage, i. 383, ii. 167-168.
 * and species, resemblance of, i. 4, ii. 411-413;
 * conversion of, into species, i. 5;
 * abnormal, ii. 413;
 * domestic, gradually produced, ii. 414.
 * , on domestic ducks, i. 277;
 * on feral fowls, ii. 33;
 * crossing of the wild and domestic ass, ii. 206.
 * , Mr., on the number of sacral vertebræ in ordinary and humped cattle, i. 79;
 * on Hungarian cattle, i. 80.
 * , sterility of Ranunculus ficaria and Acorus calamus, ii. 170.
 * , cultivated, reversion in, ii. 31-32;
 * European, culture of, in India, ii. 168-169.
 * , Mr., on breeds of horses, i. 49.
 * Verbascum, intercrossing of species of, i. 336, ii. 93, 105-107;
 * reversion in hybrids of, i. 392;
 * contabescent, wild plants of, ii. 165;
 * villosity in, ii. 277.
 * Verbascum austriacum, ii. 136.
 * Verbascum blattaria, ii. 105-106.
 * Verbascum lychnitis, ii. 105-106, 136.
 * Verbascum nigrum, ii. 136.
 * Verbascum phœniceum, ii. 107, 137;
 * variable duration of, ii. 305.
 * Verbascum thapsus, ii. 106.
 * , origin of, i. 364;
 * white, liability of, to mildew, ii. 228, 336;
 * scorching of dark, ii. 229, 336;
 * effect of changed conditions of life on, ii. 273.
 * , on the darkleaved Barberry, i. 362;
 * inheritance of peculiarities of foliage in trees, i. 362;
 * production of Rosa cannabifolia by bud-variation from R. alba, i. 381;
 * bud-variation in Aralia trifoliata, i. 382;
 * variegation of leaves, i. 383;
 * colours of tulips, i. 386;
 * uncertainty of inheritance, ii. 18;
 * persistency of white flowers, ii. 20;
 * peloric flowers of Linaria, ii. 58;
 * tendency of striped flowers to uniformity of colour, ii. 70;
 * non-intercrossing of certain allied plants, ii. 91;
 * sterility of Primulæ with coloured calyces, ii. 166;
 * on fertile proliferous flowers, ibid.;
 * on the Irish yew, ii. 241;
 * differences in the Camellia, ii. 251;
 * effect of soil on the variegated strawberry, ii. 274;
 * correlated variability in plants, ii. 330.
 * Verruca, ii. 53, 400.
 * , characters of, in rabbits, i. 120-122;
 * in ducks, i. 283-284;
 * number and variations of, in pigeons, i. 165-166;
 * number and characters of, in fowls, i. 266-268;
 * variability of number of, in the pig, i. 74.
 * , see Putsche.
 * "," ii. 276.
 * , early cultivation in Brazil, i. 311.
 * experiments on the cultivation of the vine from seed, i. 332.
 * Viburnum opulus, ii. 185, 316.
 * Vicia sativa, leaflet converted into a tendril in, ii. 392.
 * , selection of, ii. 207.
 * of plants, influenced by dryness, ii. 277.
 * , cultivation of the wild carrot, i. 326, ii. 217;
 * colours of tulips, i. 386;
 * uncertainty of inheritance in balsams and roses, ii. 18;
 * experiments with dwarf varieties of Saponaria calabrica and Tagetes signata, ii. 20;
 * reversion of flowers by stripes and blotches, ii. 37;
 * on variability, ii. 262.
 * Vinca minor, sterility in, ii. 170.
 * , i. 332-334;
 * parsley-leaved, reversion of, i. 382;
 * graft-hybrid produced by inosculation in the, i. 395;
 * disease of, influenced by colour of grapes, ii. 228;
 * influence of climate, &c., on varieties of the, ii. 278;
 * diminished extent of cultivation of the, ii. 308;
 * acclimatisation of the, in the West Indies, ii. 313.
 * Viola, species of, i. 368.
 * Viola lutea, different coloured flowers in, i. 408.
 * Viola tricolor, reversion in, ii. 31, 47.
 * , Prof., blindness occurring in the offspring of consanguineous marriages, ii. 143;
 * on the growth of bones, ii. 294, 381;
 * on cellular prolification, ii. 295;
 * independence of the elements of the body, ii. 369;
 * on the cell-theory, ii. 370;
 * presence of hairs and teeth in ovarian tumours, ii. 370;
 * of hairs in the brain, ii. 391;
 * special affinities of the tissues, ii. 380;
 * origin of polypoid excrescences and tumours, ii. 381.
 * on the selection of seed-corn, i. 318, ii. 203;
 * of cattle and sheep, ii. 202.
 * islands, ponies of, i. 52.
 * Virgularia, ii. 378.
 * , hereditary peculiarities of, ii. 8-9;
 * in amphibious animals, ii. 223;
 * varieties of, ii. 300;
 * affections of organs of, correlated with other peculiarities, ii. 328.
 * Vitis vinifera, i. 332-334, 375.
 * Viverra, sterility of species of, in captivity, ii. 151.
 * , varieties of the date palm, ii. 256.
 * , on the indications of stripes on black kittens, ii. 55.
 * , differences of, in fowls, i. 259;
 * peculiarities of, in ducks, i. 281;
 * inheritance of peculiarities of, ii. 6.
 * , on the history of the dog, i. 16;
 * ancient history of the fowl, i. 246;
 * domestic ducks unknown to Aristotle, i. 277;
 * Indian cattle sent to Macedonia by Alexander, ii. 202;
 * mention of mules in the Bible, ii. 202;
 * history of the increase of breeds, ii. 244.
 * on Verbascum phœniceum, ii. 305.
 * , G., his knowledge of hyacinths, i. 371, ii. 251.
 * , Prof., on polydactylism, ii. 12;
 * on double monsters, ii. 340;
 * influence of the shape of the mother's pelvis on her child's head, ii. 344.

 * , behaviour of, in confinement, ii. 156.
 * , on the propagation of Alpine plants by buds, runners, bulbs, &c., ii. 169.
 * "" of Gärtner, ii. 180.
 * , white cattle of, in the 10th century, i. 85.
 * , A., on intermarriage, i. 404;
 * on the inheritance of polydactylism, ii. 13.
 * , D., advantage of change of soil to wheat, ii. 146.
 * , A. R., on a striped Javanese horse, i. 59;
 * on the conditions of life of feral animals, ii. 32;
 * artificial alteration of the plumage of birds, ii. 280;
 * on polymorphic butterflies, ii. 399-400;
 * on reversion, ii. 415;
 * on the limit of change, ii. 417.
 * , Dr., on the sterility of Sphingidæ hatched in autumn, ii. 158.
 * sheep, sexual peculiarities in the horns of, i. 96.
 * , bud-variation in, i. 382.
 * , Dr., on Thuja pendula or filiformis, i. 362.
 * , i. 356-357;
 * thin-shelled, attacked by tomtits, ii. 231;
 * grafting of, ii. 259.
 * , B. D., on galls, ii. 282, 283;
 * his "Law of equable variability," ii. 351-352.
 * , F. L., on the history of the dog, i. 16;
 * on the intercrossing of the zebu and ordinary cattle, i. 83.
 * , Mr., on individual sterility, ii. 162.
 * hog, i. 76.
 * , Mr., spontaneous production of Cytisus alpino-laburnum, i. 390.
 * melon, i. 357.
 * , G. R., on the winter-colouring of Lepus variabilis, i. 111.
 * , C., production of tailless foals, i. 53;
 * on taming wild ducks, i. 278;
 * on the wildness of half-bred wild ducks, ii. 45;
 * assumption of male characters by a hen, ii. 51.
 * , H. C., on British wild fruit-trees, i. 312;
 * on the non-variation of weeds, i. 317;
 * origin of the plum, i. 345;
 * variation in Pyrus malus, i. 348;
 * on Viola amœna and tricolor, i. 368;
 * on reversion in Scotch kail, ii. 32;
 * fertility of Draba sylvestris when cultivated, ii. 163;
 * on generally distributed British plants, ii. 285.
 * , rudimentary, in some fowls, ii. 315.
 * , Miss, on Sultan fowls, i. 228.
 * , James, interbreeding of sheep, ii. 120.
 * , effect of the shape of the mother's pelvis on her child's head, ii. 344.
 * , supposed necessity for their modification, coincidently with cultivated plants, i. 317.
 * varieties of trees, i. 361.
 * habit of trees, capricious inheritance of, ii. 18-19.
 * , injury done to stone-fruit by, in North America, ii. 231.
 * cattle, descended from Bos longifrons, i. 81.
 * Indies, feral pigs of, i. 77;
 * effect of climate of, upon sheep, i. 98.
 * , Lord, change effected by, in the sheep, ii. 198.
 * , striped young pigs in, i. 76.
 * , J. O., on peloric flowers of Calceolaria, ii. 346.
 * , Archbishop, on grafting early and late thorns, i. 363.
 * , specific unity or diversity of, i. 312-313, 316-317;
 * Hasora, i. 313;
 * presence or absence of barbs in, i. 314;
 * Godron on variations in, ibid.;
 * varieties of, i. 314-315;
 * effects of soil and climate on, i. 316;
 * deterioration of, ibid.;
 * crossing of varieties of, ibid., ii. 96, 104-105, 130;
 * in the Swiss lake-dwellings, i. 317-319;
 * selection applied to, i. 318, ii. 200;
 * increased fertility of hybrids of, with Ægilops, ii. 110;
 * advantage of change of soil to, ii. 146;
 * differences of, in various parts of India, ii. 165;
 * continuous variation in, ii. 200;
 * red, hardiness of, ii. 229, 336;
 * Fenton, ii. 232;
 * natural selection in, ii. 233;
 * varieties of, found wild, ii. 260;
 * effects of change of climate on, ii. 307;
 * ancient variety of, ii. 429.
 * , Mrs., on the markings of silkworms, i. 302;
 * on the silkmoth, i. 303.
 * , Mr., reproduction of supernumerary digits after amputation, ii. 14;
 * time occupied in the blending of crossed races, ii. 87.
 * , Gilbert, vegetable diet of dogs, ii. 303.
 * and white-spotted animals, liability of, to disease, ii. 336-337.
 * flowers, most truly reproduced by seed, ii. 20.
 * , Max, on hybrid willows, ii. 50, 131, 267;
 * analogy between the pollen of old-cultivated plants, and of hybrids, ii. 268.
 * , Mr., inheritance of the primary characters of Columba livia in cross-bred pigeons, i. 201;
 * production of a white head in almond tumblers, ii. 199.
 * , Mr., on cases of individual sterility, ii. 162.
 * , spontaneous crossing of blue and white peas, i. 397;
 * crossing of varieties of cabbage, ii. 130;
 * on contabescence, ii. 165.
 * , Dr., sexual sterility of plants propagated by buds, &c., ii. 169.
 * , Sir W. R., occurrence of Bos frontosus and longifrons in Irish crannoges, i. 81;
 * attention paid to breeds of animals by the ancient Irish, ii. 203.
 * , on the dahlia, ii. 216, 273.
 * of the progeny of crossed tame animals, ii. 44-46.
 * , Capt., on the taming of pigeons among the Polynesians, ii. 161.
 * , J., on crossed cattle, ii. 104.
 * , Mr., change of plumage in a Hamburgh hen, i. 258.
 * , Mr., intercrossing of strawberries, i. 352.
 * , Capt., degeneration of dogs in India, i. 37;
 * on small Indian asses, i. 62.
 * , Rev. W., doubling of Anemone coronaria by selection, ii. 200.
 * , weeping, i. 361;
 * reversion of spiral-leaved weeping, i. 383;
 * hybrids of, ii. 267;
 * galls of, ii. 282-283.
 * , F., notice of spot pigeons, i. 156;
 * on a fantail pigeon, i. 208;
 * on tumbler pigeons, i. 209;
 * on the turbit, i. 209;
 * on the barb and carrier pigeons, i. 211;
 * on the hook-billed duck, i. 277.
 * , Mr., on a crested white Turkey cock, i. 293;
 * reversion of sheep in colour, ii. 30.
 * , B. O., fertility of hybrids of humped and ordinary cattle in Tasmania, i. 83.
 * , Dr., prepotency of the Manx over the common cat, ii. 66.
 * , James, origin of dogs, i. 16.
 * , Mr., on prepotency of transmission in sheep, ii. 69;
 * on the breeding of bulls, ii. 196.
 * , proportionate length of, in different breeds of pigeons, i. 175-176;
 * of fowls, effects of disuse on, i. 270-272;
 * characters and variations of, in ducks, i. 284-286;
 * diminution of, in birds of small islands, i. 286-287.
 * , number of, in pigeons, i. 159;
 * variability of, in fowls, i. 258.
 * , recent existence of, in Ireland, i. 16;
 * barking of young, i. 27;
 * hybrids of, with the dog, i. 32.
 * , black, of Florida, i. 22.
 * , North American, their resemblance to dogs of the same region, i. 21-22;
 * burrowing of, i. 27.
 * , Mr., crossing of the Ligurian and common hive bees, i. 299, ii. 126;
 * variability of bees, i. 298.
 * , S. P., on Arctic Mollusca, ii. 256.
 * , Willoughby, on Mr. Bates' cattle, ii. 118.
 * , W. A., on the young of the Himalayan rabbit, i. 109;
 * persistency of the coloured calyx in a crossed Polyanthus, i. 365.
 * poison, ii. 380.
 * , healing of, ii. 294.
 * , J., production of crippled calves by shorthorned cattle, ii. 118;
 * on selection in cattle, ii. 194;
 * effect of close interbreeding on pigs, ii. 121-122;
 * deterioration of game cocks by close interbreeding, ii. 124.
 * , Strethill, on the development of the hydroida, ii. 368.
 * , Dr., on Niata cattle, and on a similar malformation in the codfish, i. 89;
 * on Virginian pigs, ii. 227.

 * , on the colours of hunting dogs, ii. 209.
 * , Cardinal, regulations for the selection of rams, ii. 204.

 * "," the name of the pigeon in Persia, i. 155.
 * , domestication of, i. 82;
 * selection of white-tailed, ii. 206, 209.
 * , development of axillary bulbs in the, ii. 169.
 * , Mr., deficiency of teeth in hairless dogs, i. 34, ii. 326;
 * on ducks, i. 279, ii. 262;
 * characters of domestic goose, resembling those of Anser albifrons, i. 288;
 * whiteness of ganders, i. 288;
 * variations in goldfish, i. 296-297;
 * assumption of male plumage by the hen-pheasant, ii. 51;
 * effect of castration upon the cock, ii. 51-52;
 * breeding of the skylark in captivity, ii. 154;
 * plumage of the male linnet in confinement, ii. 158;
 * on the dingo, ii. 263.
 * fever, in Mexico, ii. 276.
 * , fastigate, ii. 241.
 * , Irish, hardy in New York, ii. 309.
 * , weeping, i. 361;
 * propagation of, by seed, ii. 18-19.
 * , variations of, in the eggs of ducks, i. 281.
 * , Mr., history of the dog, i. 16-17;
 * variations of the pulse in breeds of dogs, i. 35;
 * liability to disease in dogs, i. 35, ii. 227;
 * inheritance of goître in dogs, ii. 10;
 * on the greyhound, i. 34, 41;
 * on King Charles' spaniels, i. 41;
 * on the setter, i. 41;
 * on breeds of horses, i. 49;
 * variation in the number of ribs in the horse, i. 50;
 * inheritance of diseases in the horse, ii. 10, 11;
 * introduction of Eastern blood into English horses, ii. 212-213;
 * on white Welsh cattle, i. 85, ii. 209;
 * improvement of British breeds of cattle, i. 93;
 * rudiments of horns in young hornless cattle, ii. 55, 315;
 * on crossed cattle, ii. 104, 119;
 * on Bakewell's long-horned cattle, ii. 118;
 * selection of qualities in cattle, ii. 196;
 * degeneration of cattle by neglect, ii. 239;
 * on the skull in hornless cattle, ii. 333;
 * disease of white parts of cattle, ii. 337;
 * displacement of long-horned by short-horned cattle, ii. 426;
 * on Angola sheep, i. 95;
 * on the fleece of sheep, i. 99;
 * correlation of horns and fleece in sheep, i. 95;
 * adaptation of breeds of sheep to climate and pasture, i. 96;
 * horns of Wallachian sheep, i. 96;
 * exotic sheep in the Zoological Gardens, i. 96-97, ii. 305;
 * occurrence of horns in hornless breeds of sheep, ii. 30;
 * on the colour of sheep, ii. 30;
 * on interbreeding sheep, ii. 120;
 * on Merino rams in Germany, ii. 196;
 * effect of unconscious selection on sheep, ii. 213;
 * reversion of Leicester sheep on the Lammermuir Hills, ii. 224;
 * on many-horned sheep, ii. 326;
 * reduction of bone in sheep, ii. 242;
 * persistency of character in breeds of animals in mountainous countries, ii. 64;
 * on interbreeding, ii. 116;
 * on the power of selection, ii. 194-195;
 * slowness of production of breeds, ii. 244;
 * passages in the Bible relating to the breeding of animals, ii. 201-202.
 * , J., on the Belgian rabbit, i. 106.
 * , Capt., on a Burmese hairy family, ii. 77, 327.

 * , striped young pigs on the, i. 77.
 * , character of the, ii. 47.
 * , J. G., introduction of rabbits into Porto Santo by, i. 112.
 * Zea Mays, i. 320.
 * , i. 79;
 * domestication of the, i. 82;
 * fertile crossing of, with European cattle, i. 83, ii. 110.
 * , hybrids of, with the ass and mare, ii. 42.
 * Zephyranthes candida, ii. 164.
 * Zinnia, cultivation of, ii. 261.
 * on Malayan penguin ducks, i. 280.
 * , division of, in Algæ, ii. 378.
 * "," i. 154.