INDEX 



Seed, Nature's prodigality with, 

 85. 



Sexual selection, 194-197. 



Sharp, Dallas Lore, 153. 



Shrew. See Mouse, shrew. 



Shrike, or butcher-bird (Lanius sp.) , 

 chasing a brown creeper, 288, 289; 

 catching a junco, 289, 290; attack- 

 ing a robin, 290, 291. 



Skunk, 286. 



Snakes, wintering, 285, 286. 



Snowbird, See Junco. 



Soldier, the, 7. 



Soul, the physical basis of, 171. 



Sparrow, bush, or field sparrow 

 (Spizella pusilla), song of, 257, 

 258. 



Sparrow, chipping (Spizella passer- 

 tno), 150, 254. 



Sparrow, song (Melospiza melodia), 

 morning awakening, 43; reper- 

 toire, 43, 44; curiosity, 97; wan- 

 ing of song-impulse, 260. 



Spencer, Herbert, 50; his philosophy 

 purely scientific, 72. 



Squirrel, gray, 46, 47, 96, 111, 112; 

 grace of, 108; food of, 255. 



Squirrel, red, 242; removing a store 

 of butternuts, 45, 46, 84; winter 

 life, 47; nervous manner, 95; 

 mocking ways, 105, 106; jerki- 

 ness, 106, 107; his emotional tail, 

 108; vocal accomplishments, 108; 

 playing tag, 108, 109; traits, 109 -, 

 gathering butternuts, 110; spring 

 food of, 143, 144; hoarding in- 

 stinct automatic, 153; a tilt with 

 a red-headed woodpecker, 251, 

 252; spring food, 254, 255; and 

 weasel, 280. 



Starfish, amputating its arm, 116. 



Stars, the, 21-23. 



Steeple-bush, 236. 



Stoat, chasing hare, 280, 281. See 

 also Weasel. 



Streams, and gravitation, 87. 



Sun, a type of Nature's spend- 

 thrift method, 80. 



Suns, evolution of, 81. 



Swallow, barn (Hirundo erythro- 

 gastra), and a pair of phoebes, 223; 

 wing-power, 224-228; catching 



insects, 226-228; feeding young; 

 227, 231; young learning to fly, 

 228-230; notes, 229. 

 Sycamore, seed and birds, 254. t 



Teazel, 236, 237. 



Telepathy, 197-199. 



Tennyson, Alfred, Lord, and the 



physical sciences, 70. 

 Thorndike, Prof. Edward Lee, hia 



experiments, 176; quoted, 187. 

 Thrasher, California (Toxostoma 



redivivum), 130. 

 Threshing, 93, 94. 

 Thrush, hermit (Hylocichla gutata 



pallasi), song of, 260. 

 Thrush, wood (Hylocichla mustel- 



ina), 151; nest-building, 267,268; 



fate of two nests, 260 270. 

 Toads, 284. 

 Tree-frogs, 284. 



Trees, intelligence of, 203, 204. 

 Tropisms, 169, 170. 

 Tyndall, John, 54. 



Up and down, 218-220. 



Valleys, 25. 



Vireo, red-eyed (Vireosylva olivacea), 



song of, 259. 

 Vitalism, 55, 56. 



War, the Civil, 7-10. 



Warbler, mourning (Oporomis phiU 

 adelphia), 44. 



Wasp, solitary, 17, 205. 



Water, the law of, 138. 



Weasel, mysterious power over the 

 rabbit, 274-281; pursuing chick- 

 ens, 276; an experience with a 

 weasel, 276; seizes its victim in 

 flight, 277; chasing a chipmunk, 

 277; chasing a red squirrel, 280. 



Weeds, fattening on our labor, 151. 



Whip-poor-will (Antrostomus vocif- 

 erus), song of, 259. 



Whitman, Walt, quoted, 34, 58, 62, 

 71; and science, 71. 



Wildcat, the killing instinct in, 152, 

 153. 



Winter, wild life in, 281-288. 



Woodchuck, edibility, 26, 27; food, 



297 



