SPECIES OF WOODS. 



Physical Qualities: Weight, very 

 light (57th in this list) ; 22 lbs. per 

 cii. ft., sp. gr. 0.3449; weak (61st in 

 this list) ; elasticity medium (.55th in 

 this list) ; soft (oGth in this list) ; 



shrinkage, 3 per cent. ; warps : 



durable; easy to work; splits easily. 



Common Uses; Lumber. 



Remarks; A valuable lumber tree 

 in the Eocky Mountains and the Cas- 

 cades. Bark used for tanning. 



Cross-section, 

 magnified 37 Vi diameters. 



Tangential Section, 

 life size. 



