CONTROL OF THE HOITSP: FLY AND RELATED FLIES 157 



Fig. 33. — Use of flytrap in connection with manure bin. A. Block of wood set in 

 ground to which lever raising door is hinged. (Bishopp.) From Farmer's Bull., 

 U. S. Dept. Agr., No. 734, fig. 6. 



1^1. All: \'l. — .Manure sprea<lcr (liishopp.) 



