125 



13- The advantage of breaking up the forest into a large num- 

 ber of independent parts is evident from the following case: 

 Area of forest : 20,000 acres. 

 Rotation : 80 years, hence 4 Age Classes. 

 Method : Clear Cut and planting. 

 Lots average 80 acres .'.. 250 lots. 



-Treva'x\\uq 



* \ \ ^ 



FIGURE 5. Direction of Cutting in High Mountain Country. The dan- 

 gerous winds come down the Valleys. In lot I and also in No. 2 a storm- 

 point is produced by the position of the Valley on W. side. This also makes 

 it desirable to cut down-valley in lower part of No. 4, but not in No. 3. 

 Arrows point in the direction in which to cut. 



