U. S. DEPARTMENT OE AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 220. 



B. T. iJALljOWAY, I hiff of liureau. 



RELATION OF DROUGHT TO WEEVIL 

 RESISTANCE IN COTTON. 



BY 



O. F. COOK, 



Bionomist in Charge of Crop Acclimatization and Adaptation Investigations. 



Issued August 7, 1911. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



19U, 



