INDEX 



Pipit, American, 129; nest, 129, 



130. 



Pittsburgh, 111. 

 Plover, killdeer, 130, 131. 

 Porcupine, 166. 



Rabbit, its protection, 166; 

 caught by a weasel, 177, 178. 



Rainbow tints, in dew, etc., 13, 

 14. 



Rat, wood, 207 note. 



Reasons, 165-37. 



Redstart, 29. 



Road-mending, 11. 



Robin, young, 19; nest, 53-55, 

 64, 176; fear of man, 57, 58; 

 fittest to survive, 175, 176; 

 versatility, 176; a hustler, 

 176; danger of a plague of 

 robins, 177; a runner, 177. 



Rocks, origin of the secondary, 

 200. 



Roosevelt, Theodore, visit to 

 Pine Knot, Va., with, 101- 

 08; knowledge of India, 101; 

 opinion of Taft, 105; killing 

 a mosquito, 105, 106; pro- 

 tection of the President, 106; 

 bird-gazing, 107; letter from, 

 107, 108. 



Salamander, orange-colored, 95, 



96. 



San Diego, Cal., 210-12. 

 Sandstone, in the Catskills, 20. 

 Sap, 6-8. 



Sapsucker, yellow-bellied, 6. 

 Scorpion, 23. 

 Seals, hair, in California, 148- 



51. 



Sex, the ruling, 140, 141. 

 Shaler, Nathaniel S., quoted, 



169; on the Northern and 



Southern Hemispheres, 171, 



172. 



Shrew, 16. 

 Skunk, 206-08. 

 Snakes, 11. 



Sources, original, 190, 191. 



South, characteristics of the, 

 120, 121. 



Southern Hemisphere, 171, 172. 



Sparrow, story of a , nest, 98, 

 99. 



Sparrow, chipping or social, 

 nest, 53, 54. 



Sparrow, song, song flight, 37; 

 nesting, 54; singing, 85, 86. 



Sparrow, vesper, nesting, 80- 

 84; its names, 82; appear- 

 ance and habits, 82, 83; 

 courted by a skylark, 83. 



Species, origin of, an insoluble 

 problem, 167-69, 199. 



Spider, trap-door, 132-43. 



Spiders, 12, 23; genius of, 136. 



Spider-webs, rainbows in, 13, 

 14. 



Squirrel, gray, caught by a 

 weasel, 178. 



Squirrel, red, chased by a wea- 

 sel, 178. 



Straw berry- vines, wild, 212-14. 



Struggle, 203, 204. 



Sunrise, 197, 198. 



Survival of the fit, 201, 203. 



Swallow, bank, 78. 



Swallow, barn, 71; parental 

 anxiety, 76, 77; notes, 76, 77; 

 pleasing qualities, 77, 78. 



Swallow, cliff, 77. 



Swallow, tree, 78. 



Swallows, feeding, 15, 16; hi- 

 bernation, 78. 



Swift, chimney, 36. 



Sycamore, autumn color, 8. 



Taft, William Howard, 105. 

 Telepathy, 155. 

 Thistle, Canada, 202. 

 Thorns, the use of, 143-48. 

 Thrasher, brown, 67, 68. 

 Thrush, Alaska hermit, 129. 

 Thrush, hermit, song, 87. 

 Thrush, olive-backed, 30. 

 Thrush, Wilson's. See Veery. 



