Habit, influence of, in acclimatisation, ii.312-315.Habits, inheritance of, ii.395.Häckel, on cells, ii.370;on the double reproduction of medusæ, ii.384;on inheritance, ii.397.Hackles, peculiarities of, in fowls, i. 254.Hair, 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.Hairand teeth, correlation of, ii.326-328.Hairyfamily, corresponding period of inheritance in, ii.77.Half-castes, character of, ii.46.Half-loprabbits, figured and described, i. 107-108;skull of, i. 119.Haliætus leucocephalus, copulating in captivity, ii.154.Hallam, Col., on a two-legged race of pigs, ii.4.Hamburghfowl, i. 227, 261;figured, i. 228.Hamilton, wild cattle of, i. 84.Hamilton, Dr., on the assumption of male plumage by the hen pheasant, ii.51.Hamilton, F. Buchanan, on the shaddock, i. 335;varieties of Indian cultivated plants, ii.256.Hancock, Mr., sterility of tamed birds, ii.155-157.Handwriting, inheritance of peculiarities in, ii.6.Hanmer, Sir J., on selection of flower seeds, ii.204.Hansell, Mr., inheritance of dark yolks in duck's eggs, i. 281.Harcourt, E. V., on the Arab boar-hound, i. 17;aversion of the Arabs to dun-coloured horses, i. 55.Hardy, Mr., effect of excess of nourishment on plants, ii.257.Hare, hybrids of, with rabbit, i. 105;sterility of the, in confinement, ii.152;preference of, for particular plants, ii.232.Hare-lip, inheritance of, ii.24.Harlan, Dr., on hereditary diseases, ii.7.Harmer, Mr., on the number of eggs in a codfish, ii.379.Harvey, Mr., monstrous red and white African bull, i. 91.Harvey, Prof., singular form ofBegonia frigida, i. 365-366;effects of cross-breeding on the female, i. 404;monstrous saxifrage, ii.166.Hasorawheat, i. 313.Hautboisstrawberry, i. 353.Hawker, Col., on call or decoy ducks, i. 281.Hawthorn, 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.Hayes, Dr., character of Esquimaux dogs, i. 21-22.Haywood, W., on the feral rabbits of Porto Santo, i. 114.Hazel, purple-leaved, i. 362, 395, ii.330.Headof wild boar and Yorkshire pig, figured, i. 72.Headand limbs, correlated variability of, ii.323.Headache, inheritance of, ii.79.Heartsease, 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.Heat, effect of, upon the fleece of sheep, i. 98.Heber, Bishop, on the breeding of the rhinoceros in captivity, ii.150.Hebrides, cattle of the, i. 80;pigeons of the, i. 183.Heer, 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 fulvaandflava, interchanging by bud-variation, i. 386.Hemlockyields no conicine in Scotland, ii.274.Hemp, differences of, in various parts of India, ii.165;climatal difference in products of, ii.274.Hempseed, effect of, upon the colour of birds, ii.280.Hermaphroditeflowers, occurrence of, in Maize, i. 321.Hen, assumption of male characters by the, ii.51,54;development of spurs in the, ii.318."Hennies," or hen-like male fowls, i. 252.Henry, T. A., a variety of the ash produced by grafting, i. 394;crossing of species ofRhododendronandArabis, i. 400.Henslow, 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.Hepatica, changed by transplantation, i. 386.Herbert, Dr., variations ofViola grandiflora, i. 368;bud-variation in camellias, i. 377;seedlings from revertedCytisus 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;hybridGladiolus, ii.139;onZephyranthes candida, ii.164;fertility of the crocus, ii.165;on contabescence, ii.165;hybridRhododendron, ii.265.Herculaneum, figure of a pig found in, i. 67.Heron, 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 fasciatusandgriseus, ii.151.Heusinger, on the sheep of the Tarentino, ii.227;on correlated constitutional peculiarities, ii.337.Hewitt, 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.Hibbert, Mr., on the pigs of the Shetland Islands, i. 70.Highlandcattle, descended fromBos longifrons, i. 81.Hildebrand, Dr., on the fertilisation ofOrchideæ, i. 402-403;occasional necessary crossing of plants, ii.90;onPrimula sinensisandOxalis rosea, ii.132;onCorydalis cava, ii.132-133.Hill, 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.Himalaya, range of gallinaceous birds in the, i. 237.Himalayanrabbit, i. 107, 108-111;skull of, i. 120.Himalayansheep, i. 95.Hindmarsh, Mr., on Chillingham cattle, i. 84."Hinkel-Taube," i. 142-143.Hinnyand mule, difference of, ii.67-68.Hipparion, anomalous resemblance to in horses, i. 50.Hippeastrum, hybrids of, ii.138-139.Hive-bees, 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."Hocker-Taube," i. 141.Hobbs, Fisher, on interbreeding pigs, ii.121.Hodgkin, 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.Hodgson, Mr., domestication ofCanis 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.Hofacker, 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.Hog, Red River, ii.150.Hogg, Mr., retardation of breeding in cows by hard living, ii.112.Holland, 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.Holly, varieties of the, i. 360, 362;bud-reversion in, i. 384;yellow-berried, ii.19,230.Hollyhock, bud-variation in, i. 378;non-crossing of double varieties of, ii.107;tender variety of the, ii.310.Homer, notice of Geese, i. 287;breeding of the horses of Æneas, ii.202.Homologousparts, correlated variability of, ii.322-331,354-355;fusion of, ii.393;affinity of, ii.339-342.Hoofs, correlated with hair in variation, ii.325.Hook-billed duck, skull figured, i. 282.Hooker, 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 ofThuja orientalisfrom seeds ofT. pendula, i. 362;singular form ofBegonia 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;onRhododendron ciliatum, ii.277;stock and mignonette, perennial in Tasmania, ii.305.Hopkirk, Mr., bud-variation in the rose, i. 381;inMirabilis jalapa, i. 382;inConvolvulus tricolor, i. 408.Hornbeam, heterophyllous, i. 362.Hornedfowl, i. 229;skull figured, i. 265.Hornlesscattle in Paraguay, i. 89.Hornsof 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.Horses, 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.Horse-chesnut, early, at the Tuileries, i. 362;tendency to doubleness in, ii.168.Horse-radish, general sterility of the, ii.170."Houdan," a French sub-breed of fowls, i. 229.Howard, C., on an Egyptian monument, i. 17;on crossing sheep, ii.95,120.Huc, on the Emperor Khang-hi, ii.205;Chinese varieties of the bamboo, ii.256.Humboldt, A., character of the Zambos, ii.47;parrot speaking the language of an extinct tribe, ii.154;onPulex penetrans, ii.275.Humidity, injurious effect of, upon horses, i. 53.Humphreys, Col., on Ancon sheep, i. 100.Hungariancattle, i. 80.Hunter, John, period of gestation in the dog, i. 29;on secondary sexual characters, i. 179;fertile crossing ofAnser ferusand 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 ofLarus tridentatus, ii.302;double-tailed lizards, ii.341.Hunter, W., evidence against the influence of imagination upon the offspring, ii.264.Hutton, 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 ofGallus bankiva, i. 236.Hutchinson, Col., liability of dogs to distemper, i. 35.Huxley, 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.Hyacinths, 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.Hyacinth, feather, ii.185,316.Hyacinthus orientalis, i. 370.Hybiscus syriacus, ii.286.Hybrids, of hare and rabbit, i. 105;of various species ofGallus, i. 234-236;of almond, peach, and nectarine, i. 339;naturally produced, of species ofCytisus, i. 390;from twin-seed ofFuchsia coccineaandfulgens, 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.Hybridisation, singular effects of, in oranges, i. 336;of cherries, i. 347;difficulty of, inCucurbitæ, i. 358;of roses, i. 366.Hybridism, ii.178-191;the cause of a tendency to double flowers, ii.171;in relation to pangenesis, ii.385.Hybridityin cats, i. 44-45;supposed of peach and nectarine, i. 342.Hydra, i. 374, ii.293,359.Hydrangea, colour of flowers of, influenced by alum, ii.277.Hydrocele, ii.52.Hydrocephalus, ii.295.Hypericum calycinum, ii.170.Hypericum crispum, ii.227,337.Hypermetamorphosis, ii.367.Hypermetropia, hereditary, ii.8.Ichthyopterygia, number of digits in the, ii.16.Ilex aquifolium, ii.19.Imagination, supposed effect of, on offspring, ii.263.Imatophyllum miniatum, bud-variation in, i. 385.Incest, abhorred by savages, ii.123-124.Incubation, by crossed fowls of non-sitting varieties, ii.43-44.India, striped horses of, i. 58;pigs of, i. 66, 67, 76;breeding of rabbits in, i. 112;cultivation of pigeons in, i. 205-206.Individualvariability in pigeons, i. 158-160.Ingledew, Mr., cultivation of European vegetables in India, ii.169."IndischeTaube," ii.144.Inheritance, 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 ofColumba liviain 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.Insanity, inheritance of, ii.7,78.Insects, 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.Instincts, defective, of silkworms, i. 304.Interbreeding, close, ill effects of, ii.114-131,175.Intercrossing, 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;ofCucurbitæ, i. 357-358;of flowering plants, i. 364;of pansies, i. 368.Interdigitalpits, in goats, i. 102.Intermarriages, close, ii.122-123.Intestines, 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.Ireland, remains ofBos frontosusandlongifronsfound in, i. 81.Iris, hereditary absence of the, ii.9;hereditary peculiarities of colour of the, ii.9-10.Irish, ancient, selection practised by the, ii.203.Ironperiod, in Europe, dog of, i. 18.Islands, oceanic, scarcity of useful plants on, i. 311.Islay, pigeons of, i. 183.Isolation, effect of, in favour of selection, ii.233-234.Italy, vine growing in, during the bronze period, i. 332.Ivy, sterility of, in the north of Europe, ii.170.
Habit, influence of, in acclimatisation, ii.312-315.Habits, inheritance of, ii.395.Häckel, on cells, ii.370;on the double reproduction of medusæ, ii.384;on inheritance, ii.397.Hackles, peculiarities of, in fowls, i. 254.Hair, 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.Hairand teeth, correlation of, ii.326-328.Hairyfamily, corresponding period of inheritance in, ii.77.Half-castes, character of, ii.46.Half-loprabbits, figured and described, i. 107-108;skull of, i. 119.Haliætus leucocephalus, copulating in captivity, ii.154.Hallam, Col., on a two-legged race of pigs, ii.4.Hamburghfowl, i. 227, 261;figured, i. 228.Hamilton, wild cattle of, i. 84.Hamilton, Dr., on the assumption of male plumage by the hen pheasant, ii.51.Hamilton, F. Buchanan, on the shaddock, i. 335;varieties of Indian cultivated plants, ii.256.Hancock, Mr., sterility of tamed birds, ii.155-157.Handwriting, inheritance of peculiarities in, ii.6.Hanmer, Sir J., on selection of flower seeds, ii.204.Hansell, Mr., inheritance of dark yolks in duck's eggs, i. 281.Harcourt, E. V., on the Arab boar-hound, i. 17;aversion of the Arabs to dun-coloured horses, i. 55.Hardy, Mr., effect of excess of nourishment on plants, ii.257.Hare, hybrids of, with rabbit, i. 105;sterility of the, in confinement, ii.152;preference of, for particular plants, ii.232.Hare-lip, inheritance of, ii.24.Harlan, Dr., on hereditary diseases, ii.7.Harmer, Mr., on the number of eggs in a codfish, ii.379.Harvey, Mr., monstrous red and white African bull, i. 91.Harvey, Prof., singular form ofBegonia frigida, i. 365-366;effects of cross-breeding on the female, i. 404;monstrous saxifrage, ii.166.Hasorawheat, i. 313.Hautboisstrawberry, i. 353.Hawker, Col., on call or decoy ducks, i. 281.Hawthorn, 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.Hayes, Dr., character of Esquimaux dogs, i. 21-22.Haywood, W., on the feral rabbits of Porto Santo, i. 114.Hazel, purple-leaved, i. 362, 395, ii.330.Headof wild boar and Yorkshire pig, figured, i. 72.Headand limbs, correlated variability of, ii.323.Headache, inheritance of, ii.79.Heartsease, 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.Heat, effect of, upon the fleece of sheep, i. 98.Heber, Bishop, on the breeding of the rhinoceros in captivity, ii.150.Hebrides, cattle of the, i. 80;pigeons of the, i. 183.Heer, 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 fulvaandflava, interchanging by bud-variation, i. 386.Hemlockyields no conicine in Scotland, ii.274.Hemp, differences of, in various parts of India, ii.165;climatal difference in products of, ii.274.Hempseed, effect of, upon the colour of birds, ii.280.Hermaphroditeflowers, occurrence of, in Maize, i. 321.Hen, assumption of male characters by the, ii.51,54;development of spurs in the, ii.318."Hennies," or hen-like male fowls, i. 252.Henry, T. A., a variety of the ash produced by grafting, i. 394;crossing of species ofRhododendronandArabis, i. 400.Henslow, 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.Hepatica, changed by transplantation, i. 386.Herbert, Dr., variations ofViola grandiflora, i. 368;bud-variation in camellias, i. 377;seedlings from revertedCytisus 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;hybridGladiolus, ii.139;onZephyranthes candida, ii.164;fertility of the crocus, ii.165;on contabescence, ii.165;hybridRhododendron, ii.265.Herculaneum, figure of a pig found in, i. 67.Heron, 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 fasciatusandgriseus, ii.151.Heusinger, on the sheep of the Tarentino, ii.227;on correlated constitutional peculiarities, ii.337.Hewitt, 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.Hibbert, Mr., on the pigs of the Shetland Islands, i. 70.Highlandcattle, descended fromBos longifrons, i. 81.Hildebrand, Dr., on the fertilisation ofOrchideæ, i. 402-403;occasional necessary crossing of plants, ii.90;onPrimula sinensisandOxalis rosea, ii.132;onCorydalis cava, ii.132-133.Hill, 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.Himalaya, range of gallinaceous birds in the, i. 237.Himalayanrabbit, i. 107, 108-111;skull of, i. 120.Himalayansheep, i. 95.Hindmarsh, Mr., on Chillingham cattle, i. 84."Hinkel-Taube," i. 142-143.Hinnyand mule, difference of, ii.67-68.Hipparion, anomalous resemblance to in horses, i. 50.Hippeastrum, hybrids of, ii.138-139.Hive-bees, 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."Hocker-Taube," i. 141.Hobbs, Fisher, on interbreeding pigs, ii.121.Hodgkin, 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.Hodgson, Mr., domestication ofCanis 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.Hofacker, 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.Hog, Red River, ii.150.Hogg, Mr., retardation of breeding in cows by hard living, ii.112.Holland, 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.Holly, varieties of the, i. 360, 362;bud-reversion in, i. 384;yellow-berried, ii.19,230.Hollyhock, bud-variation in, i. 378;non-crossing of double varieties of, ii.107;tender variety of the, ii.310.Homer, notice of Geese, i. 287;breeding of the horses of Æneas, ii.202.Homologousparts, correlated variability of, ii.322-331,354-355;fusion of, ii.393;affinity of, ii.339-342.Hoofs, correlated with hair in variation, ii.325.Hook-billed duck, skull figured, i. 282.Hooker, 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 ofThuja orientalisfrom seeds ofT. pendula, i. 362;singular form ofBegonia 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;onRhododendron ciliatum, ii.277;stock and mignonette, perennial in Tasmania, ii.305.Hopkirk, Mr., bud-variation in the rose, i. 381;inMirabilis jalapa, i. 382;inConvolvulus tricolor, i. 408.Hornbeam, heterophyllous, i. 362.Hornedfowl, i. 229;skull figured, i. 265.Hornlesscattle in Paraguay, i. 89.Hornsof 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.Horses, 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.Horse-chesnut, early, at the Tuileries, i. 362;tendency to doubleness in, ii.168.Horse-radish, general sterility of the, ii.170."Houdan," a French sub-breed of fowls, i. 229.Howard, C., on an Egyptian monument, i. 17;on crossing sheep, ii.95,120.Huc, on the Emperor Khang-hi, ii.205;Chinese varieties of the bamboo, ii.256.Humboldt, A., character of the Zambos, ii.47;parrot speaking the language of an extinct tribe, ii.154;onPulex penetrans, ii.275.Humidity, injurious effect of, upon horses, i. 53.Humphreys, Col., on Ancon sheep, i. 100.Hungariancattle, i. 80.Hunter, John, period of gestation in the dog, i. 29;on secondary sexual characters, i. 179;fertile crossing ofAnser ferusand 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 ofLarus tridentatus, ii.302;double-tailed lizards, ii.341.Hunter, W., evidence against the influence of imagination upon the offspring, ii.264.Hutton, 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 ofGallus bankiva, i. 236.Hutchinson, Col., liability of dogs to distemper, i. 35.Huxley, 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.Hyacinths, 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.Hyacinth, feather, ii.185,316.Hyacinthus orientalis, i. 370.Hybiscus syriacus, ii.286.Hybrids, of hare and rabbit, i. 105;of various species ofGallus, i. 234-236;of almond, peach, and nectarine, i. 339;naturally produced, of species ofCytisus, i. 390;from twin-seed ofFuchsia coccineaandfulgens, 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.Hybridisation, singular effects of, in oranges, i. 336;of cherries, i. 347;difficulty of, inCucurbitæ, i. 358;of roses, i. 366.Hybridism, ii.178-191;the cause of a tendency to double flowers, ii.171;in relation to pangenesis, ii.385.Hybridityin cats, i. 44-45;supposed of peach and nectarine, i. 342.Hydra, i. 374, ii.293,359.Hydrangea, colour of flowers of, influenced by alum, ii.277.Hydrocele, ii.52.Hydrocephalus, ii.295.Hypericum calycinum, ii.170.Hypericum crispum, ii.227,337.Hypermetamorphosis, ii.367.Hypermetropia, hereditary, ii.8.
Habit, influence of, in acclimatisation, ii.312-315.
Habits, inheritance of, ii.395.
Häckel, on cells, ii.370;
on the double reproduction of medusæ, ii.384;
on inheritance, ii.397.
Hackles, peculiarities of, in fowls, i. 254.
Hair, 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.
Hairand teeth, correlation of, ii.326-328.
Hairyfamily, corresponding period of inheritance in, ii.77.
Half-castes, character of, ii.46.
Half-loprabbits, figured and described, i. 107-108;
skull of, i. 119.
Haliætus leucocephalus, copulating in captivity, ii.154.
Hallam, Col., on a two-legged race of pigs, ii.4.
Hamburghfowl, i. 227, 261;
figured, i. 228.
Hamilton, wild cattle of, i. 84.
Hamilton, Dr., on the assumption of male plumage by the hen pheasant, ii.51.
Hamilton, F. Buchanan, on the shaddock, i. 335;
varieties of Indian cultivated plants, ii.256.
Hancock, Mr., sterility of tamed birds, ii.155-157.
Handwriting, inheritance of peculiarities in, ii.6.
Hanmer, Sir J., on selection of flower seeds, ii.204.
Hansell, Mr., inheritance of dark yolks in duck's eggs, i. 281.
Harcourt, E. V., on the Arab boar-hound, i. 17;
aversion of the Arabs to dun-coloured horses, i. 55.
Hardy, Mr., effect of excess of nourishment on plants, ii.257.
Hare, hybrids of, with rabbit, i. 105;
sterility of the, in confinement, ii.152;
preference of, for particular plants, ii.232.
Hare-lip, inheritance of, ii.24.
Harlan, Dr., on hereditary diseases, ii.7.
Harmer, Mr., on the number of eggs in a codfish, ii.379.
Harvey, Mr., monstrous red and white African bull, i. 91.
Harvey, Prof., singular form ofBegonia frigida, i. 365-366;
effects of cross-breeding on the female, i. 404;
monstrous saxifrage, ii.166.
Hasorawheat, i. 313.
Hautboisstrawberry, i. 353.
Hawker, Col., on call or decoy ducks, i. 281.
Hawthorn, 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.
Hayes, Dr., character of Esquimaux dogs, i. 21-22.
Haywood, W., on the feral rabbits of Porto Santo, i. 114.
Hazel, purple-leaved, i. 362, 395, ii.330.
Headof wild boar and Yorkshire pig, figured, i. 72.
Headand limbs, correlated variability of, ii.323.
Headache, inheritance of, ii.79.
Heartsease, 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.
Heat, effect of, upon the fleece of sheep, i. 98.
Heber, Bishop, on the breeding of the rhinoceros in captivity, ii.150.
Hebrides, cattle of the, i. 80;
pigeons of the, i. 183.
Heer, 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 fulvaandflava, interchanging by bud-variation, i. 386.
Hemlockyields no conicine in Scotland, ii.274.
Hemp, differences of, in various parts of India, ii.165;
climatal difference in products of, ii.274.
Hempseed, effect of, upon the colour of birds, ii.280.
Hermaphroditeflowers, occurrence of, in Maize, i. 321.
Hen, assumption of male characters by the, ii.51,54;
development of spurs in the, ii.318.
"Hennies," or hen-like male fowls, i. 252.
Henry, T. A., a variety of the ash produced by grafting, i. 394;
crossing of species ofRhododendronandArabis, i. 400.
Henslow, 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.
Hepatica, changed by transplantation, i. 386.
Herbert, Dr., variations ofViola grandiflora, i. 368;
bud-variation in camellias, i. 377;
seedlings from revertedCytisus 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;
hybridGladiolus, ii.139;
onZephyranthes candida, ii.164;
fertility of the crocus, ii.165;
on contabescence, ii.165;
hybridRhododendron, ii.265.
Herculaneum, figure of a pig found in, i. 67.
Heron, 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 fasciatusandgriseus, ii.151.
Heusinger, on the sheep of the Tarentino, ii.227;
on correlated constitutional peculiarities, ii.337.
Hewitt, 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.
Hibbert, Mr., on the pigs of the Shetland Islands, i. 70.
Highlandcattle, descended fromBos longifrons, i. 81.
Hildebrand, Dr., on the fertilisation ofOrchideæ, i. 402-403;
occasional necessary crossing of plants, ii.90;
onPrimula sinensisandOxalis rosea, ii.132;
onCorydalis cava, ii.132-133.
Hill, 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.
Himalaya, range of gallinaceous birds in the, i. 237.
Himalayanrabbit, i. 107, 108-111;
skull of, i. 120.
Himalayansheep, i. 95.
Hindmarsh, Mr., on Chillingham cattle, i. 84.
"Hinkel-Taube," i. 142-143.
Hinnyand mule, difference of, ii.67-68.
Hipparion, anomalous resemblance to in horses, i. 50.
Hippeastrum, hybrids of, ii.138-139.
Hive-bees, 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.
"Hocker-Taube," i. 141.
Hobbs, Fisher, on interbreeding pigs, ii.121.
Hodgkin, 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.
Hodgson, Mr., domestication ofCanis 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.
Hofacker, 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.
Hog, Red River, ii.150.
Hogg, Mr., retardation of breeding in cows by hard living, ii.112.
Holland, 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.
Holly, varieties of the, i. 360, 362;
bud-reversion in, i. 384;
yellow-berried, ii.19,230.
Hollyhock, bud-variation in, i. 378;
non-crossing of double varieties of, ii.107;
tender variety of the, ii.310.
Homer, notice of Geese, i. 287;
breeding of the horses of Æneas, ii.202.
Homologousparts, correlated variability of, ii.322-331,354-355;
fusion of, ii.393;
affinity of, ii.339-342.
Hoofs, correlated with hair in variation, ii.325.
Hook-billed duck, skull figured, i. 282.
Hooker, 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 ofThuja orientalisfrom seeds ofT. pendula, i. 362;
singular form ofBegonia 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;
onRhododendron ciliatum, ii.277;
stock and mignonette, perennial in Tasmania, ii.305.
Hopkirk, Mr., bud-variation in the rose, i. 381;
inMirabilis jalapa, i. 382;
inConvolvulus tricolor, i. 408.
Hornbeam, heterophyllous, i. 362.
Hornedfowl, i. 229;
skull figured, i. 265.
Hornlesscattle in Paraguay, i. 89.
Hornsof 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.
Horses, 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.
Horse-chesnut, early, at the Tuileries, i. 362;
tendency to doubleness in, ii.168.
Horse-radish, general sterility of the, ii.170.
"Houdan," a French sub-breed of fowls, i. 229.
Howard, C., on an Egyptian monument, i. 17;
on crossing sheep, ii.95,120.
Huc, on the Emperor Khang-hi, ii.205;
Chinese varieties of the bamboo, ii.256.
Humboldt, A., character of the Zambos, ii.47;
parrot speaking the language of an extinct tribe, ii.154;
onPulex penetrans, ii.275.
Humidity, injurious effect of, upon horses, i. 53.
Humphreys, Col., on Ancon sheep, i. 100.
Hungariancattle, i. 80.
Hunter, John, period of gestation in the dog, i. 29;
on secondary sexual characters, i. 179;
fertile crossing ofAnser ferusand 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 ofLarus tridentatus, ii.302;
double-tailed lizards, ii.341.
Hunter, W., evidence against the influence of imagination upon the offspring, ii.264.
Hutton, 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 ofGallus bankiva, i. 236.
Hutchinson, Col., liability of dogs to distemper, i. 35.
Huxley, 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.
Hyacinths, 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.
Hyacinth, feather, ii.185,316.
Hyacinthus orientalis, i. 370.
Hybiscus syriacus, ii.286.
Hybrids, of hare and rabbit, i. 105;
of various species ofGallus, i. 234-236;
of almond, peach, and nectarine, i. 339;
naturally produced, of species ofCytisus, i. 390;
from twin-seed ofFuchsia coccineaandfulgens, 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.
Hybridisation, singular effects of, in oranges, i. 336;
of cherries, i. 347;
difficulty of, inCucurbitæ, i. 358;
of roses, i. 366.
Hybridism, ii.178-191;
the cause of a tendency to double flowers, ii.171;
in relation to pangenesis, ii.385.
Hybridityin cats, i. 44-45;
supposed of peach and nectarine, i. 342.
Hydra, i. 374, ii.293,359.
Hydrangea, colour of flowers of, influenced by alum, ii.277.
Hydrocele, ii.52.
Hydrocephalus, ii.295.
Hypericum calycinum, ii.170.
Hypericum crispum, ii.227,337.
Hypermetamorphosis, ii.367.
Hypermetropia, hereditary, ii.8.
Ichthyopterygia, number of digits in the, ii.16.Ilex aquifolium, ii.19.Imagination, supposed effect of, on offspring, ii.263.Imatophyllum miniatum, bud-variation in, i. 385.Incest, abhorred by savages, ii.123-124.Incubation, by crossed fowls of non-sitting varieties, ii.43-44.India, striped horses of, i. 58;pigs of, i. 66, 67, 76;breeding of rabbits in, i. 112;cultivation of pigeons in, i. 205-206.Individualvariability in pigeons, i. 158-160.Ingledew, Mr., cultivation of European vegetables in India, ii.169."IndischeTaube," ii.144.Inheritance, 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 ofColumba liviain 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.Insanity, inheritance of, ii.7,78.Insects, 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.Instincts, defective, of silkworms, i. 304.Interbreeding, close, ill effects of, ii.114-131,175.Intercrossing, 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;ofCucurbitæ, i. 357-358;of flowering plants, i. 364;of pansies, i. 368.Interdigitalpits, in goats, i. 102.Intermarriages, close, ii.122-123.Intestines, 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.Ireland, remains ofBos frontosusandlongifronsfound in, i. 81.Iris, hereditary absence of the, ii.9;hereditary peculiarities of colour of the, ii.9-10.Irish, ancient, selection practised by the, ii.203.Ironperiod, in Europe, dog of, i. 18.Islands, oceanic, scarcity of useful plants on, i. 311.Islay, pigeons of, i. 183.Isolation, effect of, in favour of selection, ii.233-234.Italy, vine growing in, during the bronze period, i. 332.Ivy, sterility of, in the north of Europe, ii.170.
Ichthyopterygia, number of digits in the, ii.16.
Ilex aquifolium, ii.19.
Imagination, supposed effect of, on offspring, ii.263.
Imatophyllum miniatum, bud-variation in, i. 385.
Incest, abhorred by savages, ii.123-124.
Incubation, by crossed fowls of non-sitting varieties, ii.43-44.
India, striped horses of, i. 58;
pigs of, i. 66, 67, 76;
breeding of rabbits in, i. 112;
cultivation of pigeons in, i. 205-206.
Individualvariability in pigeons, i. 158-160.
Ingledew, Mr., cultivation of European vegetables in India, ii.169.
"IndischeTaube," ii.144.
Inheritance, 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 ofColumba liviain 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.
Insanity, inheritance of, ii.7,78.
Insects, 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.
Instincts, defective, of silkworms, i. 304.
Interbreeding, close, ill effects of, ii.114-131,175.
Intercrossing, 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;
ofCucurbitæ, i. 357-358;
of flowering plants, i. 364;
of pansies, i. 368.
Interdigitalpits, in goats, i. 102.
Intermarriages, close, ii.122-123.
Intestines, 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.
Ireland, remains ofBos frontosusandlongifronsfound in, i. 81.
Iris, hereditary absence of the, ii.9;
hereditary peculiarities of colour of the, ii.9-10.
Irish, ancient, selection practised by the, ii.203.
Ironperiod, in Europe, dog of, i. 18.
Islands, oceanic, scarcity of useful plants on, i. 311.
Islay, pigeons of, i. 183.
Isolation, effect of, in favour of selection, ii.233-234.
Italy, vine growing in, during the bronze period, i. 332.
Ivy, sterility of, in the north of Europe, ii.170.