U.S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ENTOMOLOGY BULLETIN No. 79. 
L. O. HOWARD. Entomologist and Chief of Bureau. 
FUMIGATION INVESTIG ATIONS 
IN CALIFORNIA. 
By R. S. W<>< iTAIM, 
Spec ia I Field Agent. 
[CHEMICAL WORK PERFORMED BY THE MISCELLANEOUS DIVISION OF niii 
BUREAU OF CHEMISTRY.! 
Issued June 11, 1909. 
^^K. U ' S ' D ""' 
*r»cuKu 
WASHINGTON: 
GOVERNMENT PRINTING OPBflCE. 
1909. 
