INDEX 



darkness on; 65; effect of domes- 

 tication on, 68-70; gradation of, 

 71, 72; stamp of environment 

 on, 78-84; influence of the male 

 instinct of reproduction on, 87, 

 88, 91-100; influence of the gre- 

 garious instinct on, 87-91. 



Coloration, protective, 51-100. 



Columbine, 35. 



Coon. jSee Raccoon. 



Cows, path-making on hillsides by, 

 156, 157; a cow opening a gate, 

 157, 158 ; milk-manufacturing by, 

 159; a cow and a stuffed calf, 

 180. 



Crabs, courtship of, 99. 



Creeper, brown {Certhia famiUariB 

 americana) , coloration and hab- 

 its of, 86, 87. 



Crow (CorvuB brachyrhynckos), re- 

 lation of coloration to habits of, 

 90; its manner of picking up 

 food from water, 116, 117. 



Cuckoo, 30. 



Darwin, Charles, 65, 72; his theory 

 of sexual selection, 92-100; rea- 

 son and imagination in , 112; 

 quoted on taste in birds, 151, 

 167; quoted on the casarita, 181. 

 182; Carlyle on, 215, 218. 



Dogs, biting a stone, 131 ; anger in, 

 131; human traits in, 143-146; 

 John Muir's dog, 149; Hob- 

 house's experiments with, 161; 

 hunting woodchucks, 162; lack 

 of reasoning in, 188, 189. 



Ducks, 70, 71; a prodigal, 192, 193. 



Dust, the substance of all things, 

 199. 



Eagle. 117. 



Eaton, Daniel Cady, 22. 



Edwards, Jonathan, 275. 



Electricity, 209. 



Elephants, Hobhouse's experi- 

 ments with, 160, 161. 



Emerson, Ralph Waldo, quoted, 

 242. 



Erytbronium, or fawn lily, 185, 

 186, 



Eternity, 238. 



Eugdnie, Empress, 6. 



Evil, the origin of, 268-270; good 

 impossible without, 270-272 ; 

 no conspiracy of, 273; the uni- 

 versal struggle against, 276-279, 



Evolution, 215-240. 



Fabre. J. H., his experiments on a 



wasp and a bee, 184, 185. 

 Farm, the call of the, 36-38. 

 Farmer, the, and his fields, 45-50. 

 Fear, in wild and domestic animals, 



69, 70. 

 Fields, the farmer's, 45-50. 

 Fire, origin of, 235. 

 Flamingo {PhcBnicopterus ruberX 



89. 

 Flicker. See High-hole. 

 Flycatcher, great crested {Myi- 



archua crinitus), 23. 

 Fox, 109, 114. 

 Fox, arctic, 57. 

 Freedom of will, 281. 

 Freeman, Edward Augustus, 110- 



112. 

 Frog, wood, 66. 

 Froude, James Anthony, 110-112. 



Geddes, Patrick, and J. Arthur 

 Thomson, theb "Evolution of 

 Sex," 100. 



Geologic time, 236, 237. 



Goat, m.ountain, 58. 



God, the jSrst cause, 228; the Im- 

 manent, 233; Cardinal New- 

 man's view of, 265; created by 

 man in his image, 266; in the 

 human heart, 266, 267; as seen 

 in the universe, 273, 274; his will 

 to be found in the order of the 

 universe, 282. 



Grasshoppers, colors of, 66. 



Gregariousness, its influence on the 

 colors of animals, 88-91; in man 

 and animals, 135, 136. 



Groos, Karl, 149. 



Grosbeak, rose-breasted (Zame- 

 lodia ludoviciana) , 32, 76. 



Grouse, ruffed {Bonasa umbellu&), 

 coloration and feeding habits of. 

 87, 



Hamerton, Philip Gilbert, his story 

 of a cow, 180. 



