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freezing killed them. Their holes, running cell-like as they do from 
the surface down into the ground five or six inches, must be broken 
up by plowing, and when once broken up with the loose dirt round 
them the rains and the freezing winter w r eather would have the same 
•effect on the chrysalids that moisture and freezing had on those in 
the box of loose dirt. Fall plowing, then, for these reasons, will 
probably be the most efficient means of destroying these insects; 
besides, if done late enough, it will rid the ground of Cut-worms, etc. 
