I 



Commontoraltf) of Penngplbania 



DEPARTMENT OF FORESTRY 



A REPORT 



ON 



THE CHESTNUT TREE BLIGHT 



THE FUNGUS, DIAPORTHE PARASITICA, MURRILL 



BY JOHN MICKIvKBOROUGH, PH. D. 

 MAY, 1909 



H \RRIS BURG: 



C. E. AUGniNBAUGn, PRINTER TO THE STATE OF PENNSYLVANIA 



1909 



