U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOaY— BULLETIN No. 79. 



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



FUMIGATION INVESTIGATIONS 

 IN CALIFORNIA. 



By Tl. S- ^W^OG^LUM:, 



Special Field Agent. 



[CHEMICAL WORK PERFORMED BY THE MISCELLANEOUS DIVISION OF THE 

 BUREAU OF CHEMISTRY.] 



IssusTd June 11, 1909. 



itoUGI 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1909. 



