U. S. DKPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY BULLETIN NO. 74. 



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



SOME FACTORS IN THE NATURAL 



CONTROL OF THE MFXK^AN 



COTTON ROLL WEEVIL. 



BY 



W. E. HINDS, Ph. 1>.. 



In Chargt' of CottoJi Boll Weeiil Laboratory. 



Issued Decembek 14, 190'/ 



WASHINGTON: 



GOVERNMENT I'KlNTTNd OFFICE 

 1 \) 7 . 



