SPECIES OF WOODS. 



145 



in this list) ; elastic (37th in this list) ; 

 hard (9th in this list) ; shrinkage, 4 per 



cent or more ; warps, ; hard, 



and tough to work; splits easily, resists 

 nailing. 



Common Uses: Ship building, cabi- 

 net work, railway ties, cooperage. 



Remarks: Good for prairie plant- 

 ing. One of the most valuable woods of 

 North America. Not distinguished from 

 White Oak in commerce. 



Radial Section, 

 life size. 



Cross-section, 

 magnified 37^2 diameters. 



Tangential Section, 

 life size. 



