74. — An area in Idaho, stand 100 to 120 years old, selec- 

 tively logged in 1936. Logging slash has been disposed 

 of 100 percent. An average stand of 25,441 board feet per 

 acre icas left on the ground. Photographed in 1938. 



75. — A railroad selective logging operation, Idaho, 

 the residual stand in the background. 



Mote 



76. — In the pine operations of the W eyerhaeuser Timber 

 Co. at Klamath Falls, Oreg., a careful inventory of the 

 forest resources has been made to determine the lumber- 

 grade expectancy. On the basis of this information, the 

 logging is so planned as to remove the timber of highest 

 present value and greatest susceptibility to pine beetle 

 loss, and yet leave enough groicing stock so that a return 

 cut uill be possible within a reasonable length of time. 

 In logging the area pictured, an average of 14,000 board 

 feet per acre nas removed, leaving a reserve stand aver- 

 aging 6,000 board feet per acre in trees 14 inches in diam- 

 eter and over, plus a substantial understory of smaller 

 grouing stock. 



