Issued December 8, 1910. 



U. S. DEPARTMENT OF AGRICULTURE, 

 BUREAU OP ENTOMOLOGY— CIRCULAR No. 128. 



L. O. HOWARD, Entomologist and Chief of Bureau. 



INSECT INJURIES TO FOREST PRODUCTS. 



A. D. HOPKINS, 



In Charge of Forest Insect Investigations, 



64135** 10 WASHINGTON : GOVERNMENT PRfNTINQ OFRCE : 1810 



