SB 

 818 

 C578 

 ENT 



Issued January 9, 1911. 



U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF ENTOMOLOGY— CIRCULAR No. 131. 



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



HOW TO CONTROL THE PEAR THRIPS. 



S. W. FOSTER AND P. K. JONES, 



Agents and Experts. 



WASHINGTON ; GOVERNMENT PRINTING OFFICE : 1911 



C7859^-Cir. 131-11 1 



ZlcT^^I 



