LEADING COMMERCIAL SPECIES 



45 



cient redwood to last more than 100 years at a normal annual cutting 

 rate, which has been about 500,000,000 b.f. 



Lodgepole Pine. This is one of the most widely distributed coni- 

 fers in the West. It seldom reaches large size, trees occurring only up 

 to 16 inches d.b.h. This size lends itself readily to cross tie and 

 pole production. There are 43,276,000,000 b.f. of lodgepole pine. It is 

 found chiefly in the Southern Rocky Mountain region where over 

 26 billion b.f. occur; 14y 2 billion 

 b.f. are in the Northern Rocky 

 Mountain region and a little 

 more than 2 billion b.f. in the 

 Pacific Coast region. 



Sugar Pine. This is the 

 largest pine in the world, some 

 specimens being found up to 10 

 to 12 feet in diameter and 250 

 or more feet in height. It is one 

 of the most valuable species of 

 white pine, producing a high- 

 grade finish, pattern, and box 

 lumber. It reaches its best de- 

 velopment in the central Sierra 

 Nevadas where stands occur up 

 to 100,000 b.f. per acre. The 

 good commercial timber varies 

 from 20,000 to 40,000 b.f. per 

 acre, with an average of about 

 30,000 b.f. Three hundred and 

 forty-nine million board feet of 

 sugar pine were produced in 



FIG. 25. Sitka spruce 8 feet in diameter. 

 This tree is usually found in association 

 with western hemlock, Douglas fir and 

 western red cedar and sometimes grows 

 in pure stands. It is the source of much 

 lumber used for airplane construction, 

 boats, scaffold plank, box boards and 

 many other materials. 



1929, and there is a total re- 

 maining stand of 35,516,000,000 

 b.f., all of which is found in the 

 Pacific Coast region, chiefly in 



California with a small amount extending into southern Oregon. 

 Western Larch. There are 26,118,000,000 b.f. of western larch 

 chiefly in the Northern Rocky Mountain region of western Montana 

 and northern Idaho. About 8 billion b.f. are found on the Pacific 

 Coast region in Washington and Oregon. In 1930, 173,753,000 b.f. 

 were cut. This produces a hard, heavy, durable wood which is used 

 chiefly for construction purposes. It occurs in mixture with western 

 white pine and ponderosa pine. Butt logs of larch will not float in 



