122 



AGRICULTURE FOR BEGINNERS 



it cannot eat at all. An animal in this state is known as 

 the pupa (Figs. 115 and 119). Sometimes, however, the 

 pupa is not covered by a cocoon, is soft, and has some 

 power of motion. After a rest in the pupa stage, the 

 animal emerges as a mature insect (Figs. 112 and 113). 



FIG. 112. MOTH AND COCOON 

 From Hodge's " Nature Study and Life," Ginn & Company 



From this you can see that it is especially important to 

 know all the steps in the life of injurious insects, since it 

 is often easier to kill the pest at one stage of its life than 

 at another. Sometimes we do better to aim at the appar- 

 ently harmless beetle or butterfly than to try to destroy the 



