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644
FROGS.
INDEX.
GELASIMUS.
- Frogs, 349; male, temporary receptacles for ova possessed by, 208; ready to breed before the females, 212; fighting of, 349; vocal organs of, 350.
- Frontal bone, persistence of the suture in, 39.
- Fruits, poisonous, avoided by animals, 66.
- Fuegians, 133, 143; difference of stature among the, 31; power of sight in the, 33; skill of, in stone-throwing, 49; resistance of the, to their severe climate, 63, 182; mental capacity of the, 65; quasi-religious sentiments of the, 95; resemblance of, in mental characters, to Europeans, 178; mode of life of the, 197; aversion of, to hair on the face, 580; said to admire European women, 582.
- Fulgoridæ, songs of the, 281.
- Fur, whiteness of, in arctic animals, in winter, 229.
- Fur-bearing animals, acquired sagacity of, 80.
G.
- Gallicrex, sexual difference in the colour of the irides in, 425.
- cristatus, pugnacity of male, 360; red caruncle occurring in the male during the breeding-season, 389.
- Gallinaceæ, frequency of polygamous habits and of sexual differences in the, 219; love-gestures of, 380; decomposed feathers in, 385; stripes of young, 464; comparative sexual differences between the species of, 470, 471; plumage of, 472.
- Gallinaceous birds, weapons of the male, 362; racket-shaped feathers on the heads of, 384.
- Gallinula chloropus, pugnacity of the male, 360.
- cristata, pugnacity of the male, 360.
- Galloperdix, spurs of, 364; development of spurs in the female, 450.
- Gallophasis, young of, 468.
- Gallus bankiva, 447; neck-hackles of, 392.
- Stanleyi, pugnacity of the male, 363.
- Galls, 60.
- Galton, Mr., on hereditary genius, 28; gregariousness and independence in animals, 104; on the struggle between the social and personal impulses, 125; on the effects of natural selection on civilised nations, 133; on the sterility of sole daughters, 135; on the degree of fertility of people of genius, 136; on the early marriages of the poor, 138; on the ancient Greeks, 140; on the Middle Ages, 141; on the progress of the United States, 142; on South African notions of beauty, 579.
- Gammarus, use of the chelæ of, 268.
- marinus, 270.
- Gannets, white only when mature, 492.
- Ganoid fishes, 159, 165.
- Gaour, horns of the, 505.
- Gap between man and the apes, 156.
- Gaper, sexes and young of, 486.
- Gardner, on an example of rationality in a Gelasimus, 270.
- Garrulus glandarius, 407.
- Gärtner, on sterility of hybrid plants, 172.
- Gasteropoda, 272; pulmoniferous, courtship of, 262.
- Gasterosteus, 220; nidification of, 345.
- leiurus, 331, 340, 345.
- trachurus, 332.
- Gastrophora, wings of, brightly coloured beneath, 315.
- Gauchos, want of humanity among the, 123.
- Gaudry, M., on a fossil monkey, 154.
- Gavia, seasonal change of plumage in, 493.
- Geese, clanging noise made by, 368 pairing of different species of, 415; Canada, selection of mates by, 416.
- Gegenbaur, C., on the number of digits in the Ichthyopterygia, 37; on the hermaphroditism of the remote progenitors of the vertebrata, 161; two types of nipple in mammals, 162.
- Gelasimus, proportions of the sexes in a species of, 254; use of the enlarged chelæ of the male, 268; pugnacity of males of, 269; rational
