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actions of a, 270; difference of colour in the sexes of a species of, 271.
 * Gemmules, dormant in one sex, 231.
 * Genius, 28; hereditary, 564.
 * , fertility of men and women of, 136.
 * Geoffroy-Saint-Hilaire, Isid., on the recognition of women by male quadrumana, 8; on monstrosities, 30; coincidences of arrested development with polydactylism, 37; on animal-like anomalies in the human structure, 40; on the correlation of monstrosities, 44; on the distribution of hair in man and monkeys, 57; on the caudal vertebræ of monkeys, 58; on correlated variability, 60; on the classification of man, 147; on the long hair on the heads of species of Semnopithecus, 151; on the hair in monkeys, 152; on the development of horns in female deer, 504; and F. Cuvier, on the mandrill, 539; on Hylobates, 558, 559.
 * Geographical distribution, as evidence of specific distinctions in man, 169.
 * Geometræ, brightly coloured beneath, 315.
 * Geophagus, frontal protuberance of male, 340, 345; eggs hatched by the male, in the mouth or branchial cavity, 345.
 * Georgia, change of colour in Germans settled in, 196.
 * Geotrupes, stridulation of, 303, 304.
 * Gerbe, M., on the nest-building of Crenilabrus massa and C. melops, 345.
 * Gerland, Dr., on the prevalence of infanticide, 117, 577, 592; on the extinction of races, 182.
 * Gervais, P., on the hairiness of the gorilla, 57; on the mandrill, 538.
 * Gesture-language, 178.
 * Ghost-moth, sexual difference of colour in the, 316.
 * Gibbs, Sir D., on differences of the voice in different races of men, 566.
 * Gibbon, Hoolock, nose of, 150.
 * Gibbons, voice of, 527.
 * Gill, Dr., male seals larger than females, 219; sexual differences in seals, 515.
 * Giraffe, its mode of using the horns, 508; mute, except in the rutting season, 526.
 * Girard, M., disputes descent of vertibrates from Ascidians, 160; colour of sponges and Ascidians, 261; musky odour of Sphinx, 308.
 * Giraud-Teulon, on the cause of short sight, 34.
 * Glanders, communicable to man from the lower animals, 7.
 * Glands, odoriferous, in mammals, 529, 530.
 * Glareola, double moult in, 390.
 * Glomeris limbata, difference of colour in the sexes of, 274.
 * Glow-worm, female, apterous, 208; luminosity of the, 277.
 * Gnats, dances of, 280; auditory powers of, 569.
 * Gnu, sexual differences in the colour of the, 536.
 * Goat, male, wild, falling on his horns, 508; male, odour emitted by, 529; male, wild, crest of the, 531; Berbura, mane, dewlap, &c., of the male, 532; Kemas, sexual difference in the colour of the, 536.
 * Goats, sexual differences in the horns of, 230; horns of, 235, 505; mode of fighting of, 508; domestic, sexual differences of, late developed, 237; beards of, 531.
 * Goatsucker, Virginian, pairing of the, 366.
 * Gobies, nidification of 345.
 * God, want of the idea of, in some races of men, 93.
 * Godron, M., on variability, 29; on difference of stature, 31; on the want of connexion between climate and the colour of the skin, 192; on the odour of the skin, 198; on the colour of infants, 558.
 * Goldfinch, 371, 394; proportion of the sexes in the, 248; sexual differences of the beak in the, 359; courtship of the, 401.
 * , North American, young of, 485 Gold-fish, 342.
 * Gomphus, proportions of the sexes in, 254; difference in the sexes of, 290.
 * Gonepteryx Rhamni, 312; sexual difference of colour in, 322.