Ic8 THE PRINCIPAL SPECIES OF WOOD. 



Cotton Gum, Tupele Gum, Large Tupelo. Nyssa aquatics. Linn. 



Nomenclature. (Sudworth.) 



Cotton Gum, Tupelo 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, not durable 

 when exposed. 



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. The light, strong, cheap wood is used in box making. 

 The trees are found on rich bottom lands and in deep swamps, 

 often associated with cypress. Aquatica refers to the fact that 

 the tree tolerates quantities of water. 



The Sour Gum (Nyssa ogeche) grows on wet lands along the 

 Atlantic coast from South Carolina to Northern and Western Florida. 

 Trees attain heights of thirty to fifty feet. The soft, compact, weak, 

 brownish heartwood is hardly distinguishable from the brownish 

 sapwood. The tree is also known as Ogeechee Lime, Wild Limetree, 

 Limetree, Tupelo, Sour Tupelo and Gopher Plum. 



