INDEX 



483 



Forest-trees, characteristics of, in equa- 

 torial forests, 241 

 of low growth, 243 

 uses of equatorial, 245 



Formica gigas, 279 



Fossils found under old lava beds in 

 California, 444 



Frogs and toads, 305 



Frog, with bright colours uneatable, 351 



Fruit-bats, 307 



Fruits of equatorial forest-trees, 245 

 attractive colours of, 397 

 protective colours of, 398 

 greater antiquity of protected than 

 attractive, 400 



GALAPAGOS, 8 



colours of productions of, 342. 

 poor in flowers and insects, 406 

 visited by Darwin, 456 

 Galton, Mr., on range of intellectual 



power, 191 

 Ganocephala, 164 

 Gardener, Dr., on a large water Boa, 



305 

 Gastropacha querci, protective colour 



and form of, 45 

 Gaudry, M., on fossil mammals of 



Greece, 165 

 Geckos, 302 

 Geiger, on ancient perception of colour, 



413 

 Geographical distribution, dependent 



on geologic changes, 3 



its agreement with law of intro- 

 duction of new species, 8 

 of allied species and groups, 10 

 Geological distribution analogous to 



geographical, 11 

 Geology, facts proved by, 3, 6 

 Geranium pratense, G. pusillum, 404 

 Gibbons, 306 

 Ginger-worts, 253 

 Giraffe, how it acquired its long neck, 



32 

 Glacial period, man in America 



during, 439 

 Gladstone, Mr., on the colour-sense, 



413 



Glsea, autumnal colours of this genus, 45 

 Glow-worm, \ise of its light, 374 

 Goatsuckers remotely allied to owls, 



123 (note) 



Goliath cuckoo, 297 

 Gosse, Mr., on Jamaica humming-birds, 

 318, 321 



on the pugnacity of humming- 

 birds, 319 



on food of humming-birds, 321 

 Gould, Mr., on sexual plumage of 

 gray phalarope, 81 



on incubation by male dotterell, 



81 

 on the motions of humming-birds, 



317 



Grallina australis, 133 

 Grammatophyllums, 256 

 Green birds almost confined to the 



tropics, 38 

 Green, why the most agreeable colour, 



412 

 Grisebach, on cause of vivid colours of 



arctic flowers, 407 

 Guilielma speciosa, 250 

 Gums from equatorial forest-trees, 245 

 Gunther, Dr., on arboreal snakes, 40 



on colouring of snakes, 73 

 Gymnocerus cratosomoides, 67 

 G. capucinus, G. dulcissimus, 69 

 Gynecia dirce, 43 



HABENARIA chlorantha, 402 

 Habits, often persistent when use of 

 them has ceased, 121 



of children and savages analogous 



to those of animals, 121 

 if persistent and imitative maybe 



termed hereditary, 121 

 of humming-birds, 316 

 Hairy covering of Mammalia, use of, 

 194 



absence of, in man remarkable, 



195 

 the want of it felt by savages, 



195 

 could not have been abolished by 



natural selection, 196 

 Harpagus diodou, 75 

 Heat due to condensation of atmo- 

 spheric vapour, 227 



changes colours, 357 

 Heiliplus, a hard genus of Curculion- 



idee, 67 



Heliconidse, the objects of mimicry, 

 55 

 their secretions, 66 



2 12 



