330 



INDEX 



Blue-grass, flat-stemmed, 14. 

 Bobolink, 293. 

 Bollworm, in. 

 Bombycine moths, 102, 120. 

 Borer, apple-tree, 140. 



locust, 140. 

 Bottle-grass, 32. 

 Bouncing Bet, 10. 

 Bracken, 24. 

 Brake fern, 24. 

 Brown rot, 247. 

 Buckwheat, wild, 42. 

 Buffalo bur, 39. 

 Bumblebees, 204. 

 Burdock, 7. 

 Bur marigold, 19. 

 Butter-and-eggs, 10, u. 

 Buttercups, 24. 

 Butterflies, 97, 119. 

 Butterfly, Asterias, 97. 



black swallowtail, 97. 



cresphontes, 98. 



mourning cloak, 98. 



Cabbage butterfly, 97, 186. 



clubroot, 257. 



maggot, 127. 



rot, 261. 



worm, 97, 186. 

 Carabidae, 164. 

 Caraway, n. 

 Carnivora, 320. 

 Carrot, small, 21. 



wild, 20. 

 Catbird, 299. 

 Caterpillar fungi, 272. 

 Cecidomyiidae, 123. 

 Cedar, red, 25. 

 Cerambycidae, 140. 

 Chalcid flies, 152, 182. 

 Charlock, 33, 47. 

 Cheat grass, 45. 

 Cherry, black, 28, 



choke, 28. 



flower, 194. 

 Chess, 45- 



Chick weed, mouse-ear, 34. 



smooth, 34. 

 Chicory, n. 

 Chinch bug, 75. 



fungus, 76. 

 Chondrilla, 19. 

 Chrospidae, 171. 

 Chrysomelidae, 135. 

 Cicada, dog-day, 78. 



periodical, 78. 

 Cicadidae, 77. 

 Cicindelidae, 164. 

 Cinquefoil, common, 23. 



Norwegian, 23. 



silvery, 23. 

 Clotbur, 38. 

 Clover-seed midge, 124. 

 Clubroot, cabbage, 257. 

 Coccidae, 82. 

 Cockle, 49. 

 Cocklebur, 38. 

 Cockroaches, 70. 

 Codling moth, 113. 

 Coleoptera, 131. 

 Cone-flower, 19. 

 Corn cockle, 49. 



rootworm, northern, 137. 

 southern, 138. 



rust, 238. 



smut, 228, 230. 



stalk-borer, 112. 



worm, in. 

 Cotton boll weevil, 144, 148. 



rot, 203. 



wilt, 251. 

 Couch-grass, 14. 

 Cowbane, spotted, 27. 

 Crab-grass, 33. 

 Crane flies, 125. 

 Crazy weed, 26. 

 Cricket, black, 69. 



mole, 70. 



tree, 70. 



Cross-fertilized flowers, 199. 

 Crow, 293. 

 Crown gall, 261. 



