tolerant hemlock, grand fir, and Douglas-fir upon areas formerly domi- 

 nated by white pine and ponderosa pine; and (3) somewhat more refined 

 methods of classification in 1944 than in 1933 that resulted in factor- 

 ing out small areas of alien types which in the 1933 survey were classi- 

 fied into one of the three then prevailing types - white pine, ponderosa 

 pine, and larch-Doughas-f ir . 



Timber Volume 



Sawtimber volume in 1944 totaled 1,870 MM board feet (Scribner), an all- 

 species decrease of 410 MM feet in the preceding eleven years. The vol- 

 ume of six species was less in 1944 than in 1933; the volume of the re- 

 maining species increased. The 1944 volumes by species expressed as a 

 percentage of the 1933 volumes were as follows: white pine 27, ponder- 

 osa pine 66, western larch 83, western redcedar 75, Engelmann spruce 32, 

 lodgepole pine 86, Douglas-fir 137, grand fir 120, western hemlock 327, 

 hardwoods 1,260. Distribution of the sawtimber volume was as follows: 





: 1933 : 



1944 



Stand-size class 



: MM Bd. Ft. 



(Scribner) 





1,847 



1,706 





432 



150 



♦Seedling-sapling stands 



1 



14 



Total 



2,280 



1,870 



♦Volume of trees 11.0 inches d.b.h. and larger. 



2, 280, OOO, 000 Board Feef 



Po/e, Seed Zing &, 

 Sapling Stands 

 4-33,000,000 



Board Peer /, BJO, OOO, OOO Board Feef 



^=======^^^=1^= Po/e , Ss&c///ng and 



EEEES^^ee^eeeess^e Sap line? Stands 



====11====^^^= /64, 000:000 Bd Pr 



1933 1944 



-4- 



