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Bulletin No. 28— New Series. 



U. S. DEPARTMENT OF AGRICULTURE, 



DIVISION OF ENTOM^LO^p^ 



I 



'JAN 2 6 F- 



i3 



c 



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 of the Entomologist 



A. D. HOPKINS, Ph. D., 



Vice-Director and Entomologist of the West Virginia Agricultural 

 Experiment Station. 



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WASHINGTON : 



GOVERNMENT PRINTING OFFICE 



1901, 



