Bui. 45, Div. of Entomology, U, S. Dept. of Agricultun 



Plate XII. 





Testing Devices. Fallen and Hanging Infested Squares. 



Fig. 4.^, Device used to test attraction of molasses in the field in the spring: tig. 46, fallen squares 

 on ground in field; fig. 47, infested squares dried and still hanging upon the plant; fig. 48, device 

 used to test relative attractiveness to weevils of American and Egyptian squares. (Original. ) 



