U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY BULLETIN NO. 74. 



L. O. HOWARD, Entomologist and Chirf of Burrau. 



lOME FACTORS IN Tlllil lYATUJIAL 

 CONTROL OF THE MEXK.^AN 

 COTTON BOLL WEEVIL. 



BY 



W. E. HINDS, Ph. D., 



In Charge of Co(to)i Boll Weeril fAihoratory. 



Issued December 14, 1907 



WASHINGTON: 



GOVERN MK NT I'KINTIN(} OFFICE. 



1 !HJ T . 



