102 THE PRINCIPAL SPECIES OF WOOD. 



Gum, Tup'eld Gam, Large Tupelo. Nyssa aquatica Linn. 



Nomen.dature. (Sudw'brth.) 



'Cotton Gum, .TapeJo' Gum, Tupelo, Swamp Tupelo (N.C., 



Large Tupelo (local and S. C., La.). 



common names). Olivetree, Wild Olivetree 



Sour Gum (Ark., Mo.). (Miss., La.). 



Locality. 



Virginia and Kentucky, southward. 



Features of Tree. 



Sixty to eighty feet high, two to three feet in diameter. Blue 

 oblong fruit one inch or more in length. 



Color, Appearance, or Grain of Wood. 



Heartwood light brown, often nearly white, sapwood nearly 

 the same. 



Structural Qualities of Wood. 



Light, not strong, soft, compact, difficult to work. 



Representative Uses of Wood. 



Turnery, woodenware, roots used as net-floats instead of corks. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 



3 2 - 

 Modulus of Elasticity. 



730,000. 

 Modulus of Rupture. 



9300. 



Remarks. 



Butts of large trees are usually hollow. Parts above are usually 

 sound. 



