LETTER OF SUBMITTAL. 
DEPARTMENT OF AGRICULTURE, 
DIVISION OF ENTOMOLOGY, 
Washington, D. C., January 14, 1886. 
Sir: I have the honor to submit for publication Bulletin No. 11 of 
this Division, which contains in condensed form the results of a series of 
experiments with insecticides, carried on by certain agents of the Divis- 
ion during the past summer. 
Respectfully, 
C.-V. RILEY, 
Entomologist. 
Hon. Norman J. COLMAN, ' 
Commissioner of Agriculture. 
