' •iwsKCTS 



THE RED SPIDER ON COTTON 

 AND HOW TO CONTROL IT 



E. A. McGregor 



Scientific Assistant, Southern Field Crop Insect Investigations 



FARMERS' BULLETIN 831 

 UNITED STATES DEPARTMENT OF AGRICULTURE 



Contribution from the Bureau of Entomology 

 L. O. HOWARD, Chief 



Washington, D. C. August, 1917 



Show this bulletin to a neighbor. Additional copies may be obtained free from the 

 Division of Publications, United States Department of Agriculture 



WASHINQTON : QOVERNMENT PRINTINO OFFICE : 19:7 



