PLCASE RETURN TO 



^RNSr J- SCH REINER 



U. S. DEPARTMENT OF AGRICULTURE. 



^ 



*se 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 149. 



**f T *er, 



? ?r/V^b PLEASE RETURN TO 



™ ERNST J. SCHREINER 



DISEASES OF DECIDUOUS FOREST 



TREES. 



BY 



HERMANN VON SOHRENK, 



Formerly Expert in Charge of the Mississippi Vallky 



Laboratory of the Bureau of Plant Industry, 



AND 



PERLEY SPAULDING, 

 Pathologist, Investigations in Forest Pathology. 



Issued June 30, 1909. 



WASHINGTON: 



government printing office, 



1909. 



miTiirtAi nroAiinnro 



