Part 38

FORBES, EDWARD, objections to his theory of Polarity, 17-23.

FORCE is probably all Will-force, 366.

GALAPAGOS, 10.

GALTON, Mr., on range of intellectual power, 339.

GANOCEPHALA, 298.

Gastropacha querci, protective colour and form of, 62.

GAUDRY, M., on fossil mammals of Greece, 299.

GEOGRAPHICAL distribution, dependent on geologic changes, 1; its agreement with law of introduction of new species, 9; of allied species and groups, 12.

GEOLOGICAL distribution analogous to geographical, 13.

GEOLOGY, facts proved by, 2-5.

GIRAFFE, how it acquired its long neck, 42.

GLAEA, autumnal colours of this genus, 62.

GOULD, Mr., on sexual plumage of Gray Phalarope, 115; on incubation by male Dotterell, 115.

Grallina australis, 254.

GREEN birds almost confined to the tropics, 52.

Gymnocerus cratosomoides, 94.

Gymnocerous capucinus, 96.

Gymnocerous dulcissimus, 97.

GUNTHER, Dr., on arboreal snakes, 55; on colouring of snakes, 102.

Gynecia dirce, 59.

HABITS, often persistent when use of them has ceased, 234; of children and savages analogous to those of animals, 235; if persistent and imitative may be termed hereditary, 235, 236.

HAIRY covering of Mammalia, use of, 344; absence of, in man remarkable, 345; the want of it felt by savages, 346; could not have been abolished by natural selection, 348.

Harpagus diodon, 107.

HEILIPLUS, a hard genus of Curculionidae, 94.

HELICONIDAE, the objects of mimicry, 77; their secretions, 88; not attacked by birds, 79; sometimes mimicked by other Heliconidae, 85.

HELLADOTHERIUM, 300.

HEMIPTERA, protected by bad odour, 72.

HERBERT, Rev. W., on song of birds, 221.