Bulletin No. 28— New Series. 



U. S. DEPARTMEr^r 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' or the Entomologist 



A. I). HOPKINS. Ph. D., 



Vice-Director and Evtnmohi</i>i1 af tlte WcM Virginia AgricuUural 

 Experiment Slatinn . 



y\' V '■( i ^•' 



WASHINGTON : 



GOVKKNMENT PRINTING OFFICE, 

 1901. 



