Jul. 51, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate IX. 



Effects of Weevil Feeding Upon Bolls. 



Fig. 36, Small boll showing 13 feeding punctures; fig. 37, section of medium-sized injured boll 

 o. Feeding puncture closed by woody growth; b, gelatinized area resulting from feeding punc 

 tures; fig. 38, boll having two locks destroyed by two feeding punctures made by a male weevil 

 fig. 39, device used to test relative attractiveness of American and Egyptian squares— figs. 36, 

 38. reduced to three-fourths natural diameter: fig. 39, one-fourth natural diameter (original). 



