70 FARM SPIES 



when eaten by stock, yet in our trials the loss was 

 greater in the salted crib. Where salt or salt water 

 was used it softened the corn in damp weather and 

 the weevils seemed to like it better. There was even 

 loss in weight." 



" Does heat kill the weevils ? that is, could you 

 haul the corn in wet or wet it after it is in the crib 

 and let it heat to kill the pests?" one farmer asked. 



"Where heat is under control it is no doubt the 

 surest way for killing all kinds of stored grain in- 

 sects, and in seed houses where steam coils are in- 

 stalled we recommend the use of heat. To obtain 

 that heat by hauling corn in wet, we do not advise," 

 the entomologist answered. 



"How much heat does it take to kill them?" 



"The entire crib must be heated to a temperature 

 of 123 degrees F. for several hours." 



"Does that injure the germ of the corn?" another 

 asked. 



"No, sir," the entomologist answered. "The 

 germ stands a much higher temperature for a much 

 longer period without injury." 



"Don't many of the weevils freeze to death in 

 the winter ? " Ed Green asked. " I have heard people 

 say that the weevils cannot stand the cold weather." 



"I do not think that in our corn-cribs it ever gets 

 cold enough to freeze many weevils. This may kill 

 them farther north, where the winters are much 



