INDEX 



izes nature, 190, 191; its in- 

 fluence on modern literature, 

 193, 194; its influence on re- 

 ligion and politics, 194 ; tends 

 to unify the nations, 194 ; and 

 man's life, 194-196; inade- 

 quacy, 196; limitations, 301, 

 302; proof its touchstone, 

 301, 302. 



Selection, natural and artificial. 

 See Natural selection. 



Shawangunk Mountains, geol- 

 ogy, 60, 109. 



Skunk, 16. 



Slate, 45. 



Soddy, Frederick, quoted, 249, 

 250. 



Sound, nature of, 289. 



Sparrow, song, in Georgia, 90- 

 92, 96, 97, 100, 101 ; scratch- 

 ing, 97; migration, 98, 99. 



Sparrow, white-crowned, song, 

 120. 



Sparrow, white-throated, in 

 Georgia, 90-93, 96, 97, 100, 

 101 ; migration, 99. 



Speculation, and experiment, 

 293, 294. 



Spencer, Herbert, his mechan- 

 istic philosophy and juice- 

 less style, 188, 189; his idea of 

 the evolution of life, 303, 304. 



Spiders, female eating male, 

 79, 80. 



Squirrel, gray, 10, 86. 



Squirrel, red, 4; more energetic 

 and a more miscellaneous 

 feeder than the gray, 86. 



Squirrels, tails, 10. 



Struggle for life, 95, 96, 285, 

 286. 



Supernatural, the, in literature, 

 193. 



Tanager, scarlet, 6. 

 Tennyson, Alfred, quoted, 115. 

 Thistle, Canada, 87. 



Thorn, red, and cattle, 258-260. 



Thrush, hermit, 5 ; feeding in a 

 dooryard, 93, 94. 



Trees, fall of, 105, 106. 



Tuckahoe, 123. 



Tyndall, John, his scientific 

 faith, 165; on the analytic 

 and the synthetic types of 

 mind, 182; his literary gifts, 

 182, 185, 187; quoted, 185, 

 188, 308; on the origin of life, 

 219-222, 308. 



Universe, the mind in, 125-130; 

 godlessness, 130. 



Veronica, field, 88. 



Vitality, degrees of, 282-284. 



Wallace, Alfred Russel, his sci- 

 entific faith, 163, 164; his 

 anthropomorphism, 190. 



War, the European, 107, 108, 

 158, 228. 



Warbler, black-poll, coloring 

 and song, 115. 



Warbler, black-throated green, 

 on the ground, 114. 



Warbler, blue-winged yellow or 

 blue- winged, 112. 



Warbler, chestnut-sided, on the 

 ground, 114, 115. 



Warbler, golden- winged, song, 

 113, 114. 



Warbler, Wilson's, or Wilson's 

 black-cap, 115. 



Warbler, yellow redpoll or yel- 

 low palm, 113. 



Waterfalls, in Catskills, 45, 46. 



Weasel, 87; boldness, 16; and 

 chipmunk, 17, 18; blood- 

 thirstiness, 17. 



Weismann, August, 80, 124; 

 his conception of the posi- 

 tive character of natural se- 

 lection, 262-264, 266, 267. 



Whitman, Walt, 299; quoted, 



315 



