Bui. 638, U. S. Dept. of Agriculture. 



Plate III. 



Fig. 1.— An Area Clear Cut for Charcoal for the Leadville, Colo., Mines. 



Note high stumps, lack of reproduction, and erosion in right foreground. 



F-23I49A 



Fig. 2.— A Hillside Clear Cut for Acid Wood in Northern Pennsylvania. 

 The ruts down which the logs are dragged afford excellent opportunity for the starting of erosion. 



