1 8 THE PRINCIPAL SPECIES OF WOOD. 



White Oak. Quercus garryana Douglas. 



Nomenclature. (Sudworth.) 



White Oak (Cal., Oreg.). Oregon White Oak (Cal.). 

 Pacific Post Oak (Oreg.). California Post Oak. 

 Western White Oak (Oreg.). 



Locality. 



Pacific coast, British Columbia into California. 



Features of Tree. 



Sixty to ninety feet high, one and one half to two and one half 

 feet in diameter. A small shrub at high elevations. 



Color, Appearance, or Grain of Wood. 



Heartwood light brown or yellow. Sapwood lighter, often 

 nearly white. Compact structure. Distinctly marked annual 

 rings. Medullary rays often conspicuous. 



Structural Qualities of Wood. 

 Heavy, strong, hard, tough. 



Representative Uses of Wood. 



Ship-building, carriages, furniture, indoor decoration, fuel. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 



46. 

 Modulus of Elasticity. 



1,150,000. 

 Modulus of Rupture. 



12,400. 



Remarks. 



Locally important. The best substitute for Eastern White Oak 

 produced on Pacific coast. 



