4 FOREST PROTECTION 



Whatever I know of American tree diseases and of timber diseases in- 

 duced by fungi, I have learned from Dr. Hermann von Schrenk. The 

 errors only which may have crept into the 7th paragraph of this book deal- 

 ing with fungus diseases are my own. 



The graduates of the Biltmore Forest School, and all other gentle readers 

 are earnestly requested to assist me in the elimination of errors and mis- 

 takes contained in this book on forest protection. 



Biltmore, N. C, October 1, 1909. C. A. Schenck. 



