32f) THK PRINCIPLES OF HANDLING WOODLANDS 



and hail-storms, bv inundation In' water, h\ exposure to 

 acid fumes from smelters, etc. For a full discussion of 

 these various uijiiries and the methods of protection from 

 them, the reader is referred to special works on forest 

 protection, of which Dr. Schlich's "Manual of torestr\',"' 

 Volume IV, is recommended. 



