SII^VICULTURE OF WESTERN YEELOW PINE 885 



(3) The present selection method is not resulting as intended, in an 

 uneven-aged forest of properly balanced age classes, and it cannot 

 so result. 



(4) If it is decided to continue the present method of cutting, it 

 should be recognized because of the constitution of the virgin forest, 

 that the result for a hundred years or more will be a conversion forest 

 in which special cutting or restraint in cutting must be exercised to bring 

 about even a simple balance of the age classes. 



(5) Clear cutting, with provision for safeguarding the advance repro- 

 duction by leaving scattered seed trees, would be a sound silvicultural 

 system for the Northwest. To practice it would mean, practically, the 

 cutting of but five or six additional trees per acre than are now cut on 

 timber sales, and this would result in leaving the cover of advance 

 reproduction to develop, without overhead competition, into a thrifty 

 second-growth forest. 



