Page:Descent of Man 1875.djvu/665

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* Hemsbach, M. von, on medial mamma in man, 37.
 * Hepburn, Mr., on the autumn song of the water-ouzel, 370.
 * Hepialus humuli, sexual difference of colour in the, 316.
 * Herbs, poisonous, avoided by animals, 66.
 * Hermaphroditism of embryos, 161.
 * Herodias bubulcus, vernal moult of, 393.
 * Heron, Sir R., on the habits of peafowl, 418, 419, 443.
 * love-gestures of a, 380
 * Herons, decomposed feathers in, 385; breeding plumage of, 391, 392; young of the, 481; sometimes dimorphic, 484; continued growth of crest and plumes in the males of some, 485; change of colour in some, 494.
 * Hesperomys cognatus, 568.
 * Hetœrina, proportion of the sexes in, 254; difference in the sexes of, 290.
 * Heterocerus, stridulation of, 302.
 * Hewitt, Mr., on a game-cock killing a kite, 363; on the recognition of dogs and cats by ducks, 412; on the pairing of a wild duck with a pintail drake, 415; on the courtship of fowls, 417; on the coupling of pheasants with common hens, 420.
 * Hilgendorf, sounds produced by crustaceans, 274.
 * Hindoo, his horror of breaking his caste, 122, 124.
 * Hindoos, local difference of stature among, 31; difference of, from Europeans, 192; colour of the beard in, 558.
 * Hipparchia Janira, 319; instability of the ocellated spots of, 428.
 * Hippocampus, development of, 163; marsupial receptacles of the male, 346.
 * minor, 202.
 * Hippopotamus, nakedness of, 56.
 * Hips, proportions of, in soldiers and sailors, 32.
 * Hodgson, S., on the sense of duty, 97.
 * Hoffberg, on the horns of the reindeer, 503; on sexual preferences shown by reindeer, 525.
 * Hoffman, Prof., protective colours, 281; fighting of frogs, 350.
 * Hog-deer, 546
 * Hog, wart-, 519; river-, 520.
 * Holland, Sir H., on the effects of new diseases, 182.
 * Homologous structures, correlated variation of, 43.
 * Homoptera, 281; stridulation of the, and Orthoptera, discussed, 288.
 * Honduras, Quiscalus major in, 248.
 * Honey-buzzard of India, variation in the crest of, 424.
 * Honey-suckers, moulting of the, 392; Australian, nidification of, 454.
 * Honour, law of, 121.
 * Hooker, Dr., forbearance of elephant to his keeper, 104; on the colour of the beard in man, 558.
 * Hookham, Mr., on mental concepts in animals, 83.
 * Hoolock Gibbon, nose of, 150.
 * Hoopoe, 371; sounds produced by the male, 376.
 * Hoplopterus armatus, wing-spurs of, 366.
 * Hornbill, African, inflation of the neck-wattle of the male during courtship, 383.
 * Hornbills, sexual difference in the colour of the eyes in, 425; nidification and incubation of, 454.
 * Horne, C., on the rejection of a brightly-coloured locust by lizards and birds, 289.
 * Horns, sexual differences of, in sheep and goats, 230; loss of, in female merino sheep, 231; development of, in deer, 233; development of, in antelopes, 234; from the head and thorax, in male beetles, 297; of deer, 503, 506, 515; and canine teeth, inverse development of, 514.
 * Horse, fossil, extinction of the, in South America, 191; polygamous, 217; canine teeth of male, 502; winter change of colour, 542.
 * Horses, rapid increase of, in South America, 47; diminution of canine teeth in, 53; dreaming, 74; of the Falkland Islands and Pampas, 181; numerical proportion of the sexes in, 215, 216; lighter in winter in Siberia, 229; sexual