Bulletin No. 28— New Series. ■ 



U. S. DEPARTMENT OF AGRICULTURE, 



DIVISION OF ENTOMOLOGY. 



INSECT ENEMIES OF THE SPRUCE 

 IN THE NORTHEAST. 



A POPULAR ACCOUNT OF RESULTS OF SPECIAL INVESTIGATIONS, WITH 

 RECOMMENDATIONS FOR PREVENTING LOSSES. 



Prepared Under the Direction op the Entomologist 



A. D. HOPKINS, Ph. D/, 



Vice-Director and Entomologist of the West Virginia Agricultural 

 Experiment Station. 



WASHINGTON : 



GOVERNMENT PRINTING OFFICE. 



1901, 



