50 



The Bulletin. 



plants injured in this way are either broken off by the wind or wilt 

 down and do not recover. Loss in this way is of course complete, 

 for it is too late to replant. 



Fig. 37.— Stock of Young Transplanted Tobacco Plant cut open to show the work 



of a Pith Worm, enlarged. 

 (.Author's illustration.) 



Wireworms are the larvae of certain beetles which are known com- 

 monly as "click beetles" or "jacksnappers." (Fig. 38.) Every coun- 



Fig. 38.— A Click Beetle, an adult of Wireworms and Pith Worms, enlarged. 



(Photograph by the author.) 



try boy knows the jacksnapper and his ability to turn "flip-flops" in 

 the air. These beetles are frequently attracted to lights at night, and 



