Bulletin No. 28— New Series. 



U. S. DEPARTMENT OE AGRICULTURE, 



DIVISION OF KNTOMOLOCiY. 



INSECT ENEMIES OF THE SPRUCE 

 IN THE NORTHEAST. 



A POPULAR ACCOUNT OF RESULTS OF SPECIAL INVESTIGATIONS, WITH 

 RECOMMENDATIONS FOR PREVENTING LOSSES. 



I'KKPARKD Under thk Direction of the Entomologist 



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



Virr-JJmrlor ami Enlomologwt of the West Vmjhiia Agrirallund 

 Experiment Station. 



WASHINGTON : 



(iOVKKNMEKT PRINTING OFFIOK 



