50 THE PRINCIPAL SPECIES OF WOOD. 



Butternut, White Walnut. Juglans cinerea Linn. 



Nomenclature. 



Butternut, White Walnut Walnut (Minn.), 

 (local and common names). White Mahogany. 

 Oil Nut (Me., N. H., S. C.). 



Locality. 



New Brunswick to Georgia, westward to Dakota and Arkansas. 

 Best in Ohio River basin. 



Features of Tree. 



Medium size, sometimes seventy-five feet or over in height, two 

 to four feet in diameter. Branches widespread; large-sized 

 oblong edible nuts. 



Color, Appearance, or Grain of Wood. 



Heartwood light gray -brown, darkening with exposure; sap- 

 wood nearly white, coarse-grained compact structure, attrac- 

 tive. 



Structural Qualities of Wood. 



Light, soft, not strong, easily worked. Susceptible of high 

 polish. 



Representative Uses of Wood. 



Interior finish, cabinet-work. Inner bark furnishes yellow dye. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 



25- 

 Modulus of Elasticity. 



1,150,000. 

 Modulus of Rupture. 



8400. 



Remarks. 



The sap contains sugar and is occasionally mixed with maple- 

 sap in the manufacturing of ' ' maple ' ' sugar. 



