2 2 THE PRINCIPAL SPECIES OF IVOOD. 



Til 1 /^ 1 TT 11 r. 1 ( Quercus velulina Lam. 

 Black Oak, Yellow Oak. ] ^„^^^„^ ^.„^^^„-^ ^^^/,- 



Nomenclature. (Sudworth.) 



Black Oak, Yellow Oak (local Tanbark Oak (111.), 



and common names). Spotted Oak (Mo.). 



Yellow Bark, Yellow-bark Oak Quercitron Oak (Del., S. C, 



(R. I., Minn.). La., Kans., Minn.). 



Dyer's Oak (Tex.). 



Locality. 



East of longitude 96 degrees, Maine and Florida, westward 

 intermittently to IMinnesota and Texas. Best in North 

 Atlantic States. 



Features of Tree. 



Ninety to one hundred and thirty feet in height, three to five 

 feet in diameter. Dark gray to black bark, yellow inner 

 bark. Acorns have bitter yellow kernels. Foliage turns hand- 

 somely in autumn. 



Color, Appearance, or Grain of Wood. 



Heartwood light reddish brown, sapwood lighter, coarse grain, 

 annual layers strongly marked, thin medullary rays. 



Structural Qualities of Wood. 



Heavy, hard, strong, liable to check in drying, not tough. 



Representative Uses of Wood. 



Cooperage, construction, furniture, and decoration. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 

 45 (U. S. Forestry Div.).* 

 44. 



Modulus of Elasticity. 



i,740,oco (average of 40 tests by U. S. Forestry Div.).* 

 1,470,000. 



Modulus of Rupture. 



10,800 (average of 40 tests by U. S. Forestry Div.).* 

 14,800. 



Remarks. 



Yellow inner bark affords yellow dye. 



* See page 6. 



