RELATION OF ANIMALS TO MAN 



291 



Permission of U. S. 

 Dept. of Agricul- 

 ture. 



Fig. 141. Boll- 

 weevil, one of the 

 most important en- 

 emies of cotton 

 plants. 



Permission of U. S. 

 Dept. of Agricul- 

 ture. 



Fig. 142. Codling 

 moth; A, adult; B, 

 larva in apple; C, 

 pupa or chrysalis. 



After U. S. Dept. of Agriculture. 

 Y\K 143 Corn plant two feet tall infested with chinch bugs. Adult 



enlarged. 



