CONTROL OF THE HOUSE FLY AND RELATED FLIES 155 





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Fig. 3;^. — A maggot trap for house-fly control. View of the maggot trap, showing the 

 concrete basin containing water in which larvae are drowned, and the wooden 

 platform on which manure is heaped. (Hutchison.) From U. S. Dept. Agr. Bull. 

 ^00, plate 1 (larger), or farmer's bull. 851, fig. 14. (as above). 



Plate V. — Manure box with fly trap attached. (Bishopp.) 



