SPECIES OF WOODS. 



87 



Physical Qualities: Weight, very 

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

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

 this list) ; elasticity medium (55th in 

 this list); soft (56th in this list); 



shrinkage, 3 per cent. ; warps ; 



durable; easy to work; splits easily. 



Common Uses: Lumber. 



Remarks: A valuable lumber tree 

 in the Rocky Mountains and the Cas- 

 cades. Bark used for tanning. 



Radial Section, 

 life size. 



Cross-section, 

 magnified 37^ diameters. 



Tangential Section, 

 life size. 



