U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 88. 



B. T. GALLOWAY, Chief of Bureau. 



WEEVIL-RESISTING ADAPTATIONS 

 OF THE COTTON PLANT. 



BY 



O. F. COOK, 



BiONOMiST IN Charge of Investigations in the Agricultural 

 Economy of Tropical and Subtropical Plants. 



Issued January 13, 1906. 



WASHINGTON: 



government printing office. 



1906. 



