UNfYEHSny OF nr rvnrc* ymphf^ 



Commonwealth of Pennsylvania 



AUG 3 0 1915 



DEPARTMENT OF FORESTRY 



Bulletin No. 12— April, 1915 



Insects as Carriers of the Chestnut 

 Blight Fungus 



BY 



R. A. STUDHALIER, Formerly Agent, Investigations in Forest 

 Pathology, U. S. Bureau of Plant Industry 



AND 



A. G. RUGGLES, Formerly Entomologist, Pennsylvania 

 Chestnut Tree Blight Commission 



ISSUED BY DIRECTION OF THE COMMISSIONER OF FORESTRY 



HARKISBURG, PA.: 

 WM. STANLEY RAY, STATE PRINTER 



1915 



