LIST OF ILLUSTBATIONS XXV 



'lO- PAOI 



168. The Cotton. Boll-worm on the Outside of a Cotton Boll. 



(U. S. Dept. Agr., Bureau of Entomology) . . .391 



169. Pupal or Chrysalis Stage of the Cotton Boll-worm and the 



Corn Ear-worm. (U. S. Dept. Agr., Bureau of Ento- 

 mology) 392 



170. Pupa of Boll-worm in its Underground Burrow. (After 



Quaintance and Brues, U. S. Department of Agricul- 

 ture) 393 



171. The Mature Boll-weevil. (W. E. Hinds) . . . .394 



172. Cotton Square, showing Boll-weevil Larva in Position. 



(After W. D. Hunter, U. S. Dept. Agr., Bureau of Ento- 

 mology) . . 395 



173. Punctured Cotton Square. (After W. D. Hunter, U. S. 



Dept. Agr. , Bureau of Entomology) .... 396 



174. Cotton Stalk Cutter. (Louisiana Crop Pest Commission) . 400 



175. Side "View of Cotton Stalk Cutter. (Louisiana Crop Pest 



Commission) 400 



176. Cotton Plant in the ;' Budding" Stage. (Louisiana Crop 



Pest Commission) 402 



177. The Hinds Chain Cultivator. (W. B. Hinds) . . .403 



178. Map showing the Areas infested by the Boll-weevil. (TJ. S. 



Dept. Agr., Bureau of Entomology) .... 404 



179. Cowpea-pod Weevil. (After Chittenden, U. S. Dept. Agr., 



Bureau of Entomology) 408 



180. Cotton Plants attacked by Wilt 412 



181. Section through Wilted and Healthy Cotton Stalks . . 413 



182. Boot-knot or Nematode Injuries on Cotton Roots. (C. F. 



Atkinson) 416 



183. Anthracnose on Cotton Bolls. (C. F. Atkinson) . . 417 



184. Diseased Leaves, Boll, and Stem of Cotton Plant. (W. A. 



Orton, Bureau of Plant Industry, U. S. Department of 

 Agriculture) 420 



185. A Field of Hemp. (Bureau of Plant Industry, U. S. De- 



partment of Agriculture) 422 



186. Leaf and Flowers of Hemp. (L. H. Bailey) . . .423 



187. Shocking Hemp. (L. H. Bailey) 425 



188. A Field of Sweet-potatoes in Alabama .... 427 



