THE PACIFIC NORTHWEST 63 



procedure would also hold for areas on which yellow pine 

 occurs in nearly pure stands. In these localities dense stands 

 of second-growth yellow pine occur. It will often be profit- 

 able, where there is a market at hand, to thin these stands 

 when they are about 30 years old, removing the suppressed 

 trees for mine props. Trees 6, 8 and 10 inches and up are 

 used for this purpose, and sell for from 5 to 6 cents a run- 

 ning foot. 



"On the upper portion of the sugar pine-yellow pine type, 

 where both species have about an equal representation in the 

 stand, seed trees of each should be left, wherever practicable, 

 in the proportion of two sugar pines to one yellow pine. 



In the fir belt, where sugar pine and fir are the principal 

 species, the fir should be cut clean wherever possible and 

 sugar pine should be relied upon for the future forest. 



"On all lands, the Douglas spruce, white fir and incense 

 cedar should be cut whenever possible, and chutes, skidways 

 and bridges should be constructed from the two last named 

 species." 



The following specific instructions are issued for marking 

 timber on National Forest sales in the sugar pine-yellow pine 

 type : 



"Owing to the large size of the trees, marking in this type 

 of forest should be done with special care, since a slight mis- 

 take involves a comparatively large amount of timber. 



"On nearly all of the lands included in this type tbe 

 ground is now but partly and insufficiently stocked with 

 young timber, the areas of forest are constantly becoming 

 more accessible to markets, and there is every indication of 

 a strong future demand at greatly increased prices. On 

 nearly every tract, a second cut can be made within thirty 

 years. AH marking under present sales should be done 

 strictly with reference to two points : 



"1. Stocking the cut-over land as fully as possible with 

 sugar and yellow pine. 



"2. Securing a second cut within thirty years. 



"AH cutting should be done under the 'selection system,' 



