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. 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. HIGHLAND cattle, descended from _Bos longifrons_, i. 81. HILDEBRAND, 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. 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. HIMALAYAN rabbit, i. 107, 108-111; skull of, i. 120. HIMALAYAN sheep, i. 95. HINDMARSH, Mr., on Chillingham cattle, i. 84. "HINKEL-TAUBE," i. 142-143. HINNY and 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; {457} origin of the Newfoundland dog, i. 42; transmission of a peculiar lock of hair, ii. 5. HODGSON, 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. 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. HOMOLOGOUS parts, 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 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. HOPKIRK, Mr., bud-variation in the rose, i. 381; in _Mirabilis jalapa_, i. 382; in _Convolvulus tricolor_, i. 408. HORNBEAM, heterophyllous, i. 362. HORNED fowl, i. 229; skull figured, i. 265. HORNLESS cattle in Paraguay, i. 89. HORNS 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. 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; on _Pulex penetrans_, ii. 275. HUMIDITY, injurious effect of, upon horses, i. 53. HUMPHREYS, Col., on Ancon sheep, i. 100. HUNGARIAN cattle, i. 80. {458} HUNTER, 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. 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 of _Gallus 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 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. HYBRIDISATION, singular effects of, in oranges, i. 336; of cherries, i. 347; difficulty of, in _Cucurbitæ_, 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. HYBRIDITY in 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. INDIVIDUAL variability in pigeons, i. 158-160. INGLEDEW, Mr., cultivation of European vegetables in India, ii. 169. "INDISCHE Taube," 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 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. 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; {459} 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; of _Cucurbitæ_, i. 357-358; of flowering plants, i. 364; of pansies, i. 368. INTERDIGITAL pits, 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. _Ipomoea purpurea_, ii. 128. IRELAND, remains of _Bos frontosus_ and _longifrons_ found 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. IRON period, 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.

JACK, Mr., effect of foreign pollen on grapes, i. 400. JACKAL, i. 24, 27, 30; hybrids of, with the dog, i. 32; prepotency of, over the dog, ii. 67. JACOBIN pigeon, i. 154, 208. JACQUEMET-BONNEFORT, on the mulberry, i. 334. JAGUAR, with crooked legs, i. 17. JAMAICA, feral dogs of, i. 28; feral pigs of, i. 77; feral rabbits of, i. 112. JAPAN, horses of, i. 53. JAPANESE pig (figured), i. 69. JARDINE, Sir W., crossing of domestic and wild cats, i. 44. JARVES, J., silkworm in the Sandwich islands, i. 301. JAVA, Fantail pigeon in, i. 148. JAVANESE ponies, i. 53, 59. JEMMY BUTTON, i. 309. JENYNS, L., whiteness of ganders, i. 288; sunfish-like variety of the goldfish, i. 297. JERDON, J. C., number of eggs laid by the pea-hen, ii. 112; origin of domestic fowl, i. 237. JERSEY, arborescent cabbages of, i. 323. JESSAMINE, i. 394. JEITTELES, Hungarian sheep-dogs, i. 24; crossing of domestic and wild cats, i. 44. JOHN, King, importation of stallions from Flanders by, ii. 203. JOHNSON, D., occurrence of stripes on young wild pigs in India, i. 76. JORDAN, 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. JOURDAN, parthenogenesis in the silk moth, ii. 364. JUAN DE NOVA, wild dogs on, i. 27. JUAN FERNANDEZ, dumb dogs on, i. 27. _Juglans regia_, i. 356-357. JUKES, Prof., origin of the Newfoundland dog, i. 42. JULIEN, Stanislas, early domestication of pigs in China, i. 68; antiquity of the domestication of the silk-worm in China, i. 300. JUMPERS, a breed of fowls, i. 230. JUNIPER, variations of the, i. 361, 364. _Juniperus suecica_, i. 361. _Jussiæa grandiflora_, ii. 170. JUSSIEU, A. de, structure of the pappus in _Carthamus_, ii. 316.

KAIL, Scotch, reversion in, ii. 32. "KALA-PAR" pigeon, i. 142. KALES, i. 323. KALM, 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. "KALMI Lotan," tumbler pigeon, i. 151. KANE, Dr., on Esquimaux dogs, i. 21. KARAKOOL sheep, i. 98. KARKEEK, on inheritance in the horse, ii. 10. "KARMELITEN Taube," i. 156. KARSTEN on _Pulex penetrans_, ii. 275. KATTYWAR horses, i. 58. KEELEY, R., pelorism in _Galeobdolon luteum_, ii. 59. KERNER on the culture of Alpine plants, ii. 163. KESTREL, breeding in captivity, ii. 154. "KHANDÉSI," i. 141. KHANG-HI, selection of a variety of rice by, ii. 205. KIANG, ii. 43. KIDD, on the canary bird, i. 77, ii. 275. KIDNEY Bean, i. 371; varieties of, ii. 256, 275. {460} KIDNEYS, compensatory development of the, ii. 300; fusion of the, ii. 341; shape of, in birds, influenced by the form of the pelvis, ii. 344. KING, Col., domestication of rock doves from the Orkneys, i. 184, 185. KING, P. S., on the Dingo, i. 21, 28. KIRBY and Spence, on the growth of galls, ii. 283. KIRGHISIAN sheep, i. 98. KITE, breeding in captivity, ii. 154. KLEINE, variability of bees, i. 298. KNIGHT, 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. KNOX, Mr., breeding of the eagle owl in captivity, ii. 154. KOCH, degeneracy in the turnip, i. 325. KOHLRABI, i. 323. KÖLREUTER, 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. "KRAUSESCHWEIN," i. 67. KROHN, on the double reproduction of Medusæ, ii. 384. "KROPF-TAUBEN," i. 137.

LABAT, 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. LABURNUM, Adam's, see _Cytisus Adami_; oak-leaved, reversion of, i. 382; pelorism in the, ii. 346; Waterer's, i. 390. LACHMANN, on gemmation and fission, ii. 358. _Lachnanthes tinctoria_, ii. 227, 336. LACTATION, imperfect, hereditary, ii. 8; deficient, of wild animals in captivity, ii. 158. LADRONE islands, cattle of, i. 86. LAING, Mr., resemblance of Norwegian and Devonshire cattle, i. 82. LAKE-DWELLINGS, 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. LAMARE-PIQUOT, observations on half-bred North American wolves, i. 22. LAMBERT, A. B., on _Thuja pendula_ or _filiformis_, i. 362. LAMBERT family, ii. 4, 76. LAMBERTYE on strawberries, i. 351, 352; five-leaved variety of _Fragaria collina_, i. 353. LANDT, L., on sheep in the Faroe islands, ii. 103. LA PLATA, wild dogs of, i. 27; feral cat from, i. 47. LARCH, ii. 310. LARKSPURS, insect agency necessary for the full fecundation of, ii. 21. _Larus argentatus_, ii. 157. _Larus tridactylus_, ii. 302. LASTERYE, merino sheep in different countries, i. 99. LATENT characters, ii. 51-56. LATHAM, 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. LA TOUCHE, J. D., on a Canadian apple with dimidiate fruit, i. 392-393. "LATZ-TAUBE," i. 154. LAUGHER pigeon, i. 155, 207. _Laurus sassafras_, ii. 274. LAWRENCE, 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. LAWSON, Mr., varieties of the potato, i. 330. LAXTON, Mr., bud-variation in the gooseberry, i. 376; crossing of varieties of the pea, i. 397-398; {461} double-flowered peas, ii. 168. LAYARD, E. L., resemblance of a Caffre dog to the Esquimaux breed, i. 25,