U.S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF ENTOMOLOGY. 
Bulletin No. 13. 
EXPe *<Ue1 LT(j KA:- 
s Tat Si 
REPO RTS% 
Vmv ^srry 0p r 
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OF 
OBSERVATIONS AND EXPERIMENTS 
IN 
THE PRACTICAL WORK OF THE DIVISION, 
UNDER THE DIRECTION OF THE ENTOMOLOGIST. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1887 . 
