334 



INDEX 



Sheep sorrel, 22. 

 Shejjierd's puise, 34. 

 Smut fungi, 226. 

 Sneezeweed, 27. 

 Soapwort, 10. 

 Soldier bugs, 167. 

 Sorrel, field,, 22. 



sheep, 22. 

 Sparrow, chipping, 296. 



English, 297. 

 Sparrows, 293, 296. 

 Spanish needles, 19. 

 Sphingidae, 100. 

 Sphinx moths, 100, 119, 208. 



Pandorus, loi. 

 Squash, blossoms, 196, 211. 



bug, 73, 94. 

 Squirrel-tail grass, 15- 

 Stick-tights, 19. 

 Strawberry, barren, 23. 



blossoms, 198, 211. 



leaf spot, 250. 



wild, 23. 

 Sumach, dwarf, 29. 



mountain, 29. 



poison, 29. 



smooth, 29. 



staghotn, 29. 



velvet, 29. 

 Sundrops, 10. 

 Sunflower, wild, 19. 

 Superparasitism, 181. 

 Sweet clover, 11. 



fern, 13, 25. 

 Syrphids, 169. 

 Syrphus flies, i6g. 



Tachina flies, 188. 

 Tachina fly, large-homed, 190. 

 Tachinidffi, 188. 

 Tansy, 11. 

 Teasel, 10. 



Tent caterpillars, 103, r86. 

 TenthredinidsE, 149. 

 Thistle, Canada, 18. 

 pasture, 17. 



Thistle, Russian, 150. 



Thorn apple, 41. 



Tickle-grass, iS- 



Tineina, 116. 



Tipulidae, 126. 



Toadflax, 11. 



Toadstools, 215. 



Tomato worms, 101. 



Tomato, strawberry, 40. 



Tomato fruit worm, 11 1. 



Tortridna, 115. 



Tree hoppers, 79. 



Trumpet miner, apple-leaf, 116. 



Tumbleweed, 36. 



Russian, 50. 

 Turnip maggot, 127. 



Uredinales, 231. 

 Ustiliginales, 226. 



Varying hare, 321. 

 Vegetable oyster, 11. 

 Verbena, wild, 20. 

 Vervain, 20. 

 Vespidae, 170. 

 Voles, 312. 



Walking sticks, 71, 72. 

 Wasps, sodal, 170. 



solitary, 170. 

 Webworm, fall, 105, 186. 

 Wheat jointworm, 153. 



midge, 124. 

 Wheel bug, 16C. 

 White fly fungi, 273. 

 White grub, 131. 

 White-tops, 19. 

 Whiteweed, 16. 

 Willow-herb, 9. 



Wire-grass, 14. 

 Wireworms, 134. 

 Witch-grass, 14, 31. 

 Woodchuck, 310. 



Yarrow, 11. 



