272 



THE BOOK OF CORN 



finely dusted on both sides. If necessary make several 

 parallel furrows in the same manner. The bugs tumble 

 in them and are unable to crawl out on account of 

 the dust crumbling under their feet. If the sun is 

 hot the bulk of the pests are destroyed ; but in cool 

 weather it may be necessary to drag the log back 

 and forth several times during the day to destroy 

 them. 



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Fig 73 — Various Stages of the Chinch Bug 



(After Johnson) 



When the ground is too wet to make furrows, 

 gas or coal tar can be used. It should be poured in 

 a continuous stream on the ground, forming a band 

 about half an inch or more in width. The bugs will 

 crawl up to this line, but will not cross it. They will 

 run in either direction along the line, and can be 

 trapped by digging post holes every few rods. Care 

 must be taken to see that no rubbish, not even a straw 



