150 THE PRINCIPAL SPECIES OF WOOD. 



Pitch Pine. Pinus rigida Mill. 



Nomenclature. (Sudworth.) 



Pitch Pine (local and common Yellow Pine (Pa.). 



name). Black Pine (N. C.). 



Longleaved Pine, Longschat Black Norway Pine. 



Pine (Del. ). Rigid Pine, Sap Pine. 



Hard Pine (Mass.). 

 Locality. 



Atlantic coast, Canada to Georgia, Kentucky. 



Features of Tree. 



Forty to sometimes eighty feet in height, one to sometimes 

 three feet in diameter. Rigid flattened leaves in threes from 

 short sheaths. 



Color, Appearance, or Grain of Wood. 



Heartwood light brown or red, thick sapwood yellow to nearly 

 white. Coarse conspicuous grain, compact structure, very 

 resinous. 



Structural Qualities of Wood. 

 Light, soft, not strong, brittle. 



Representative Uses of Wood. 

 Coarse lumber, fuel, charcoal. 



Weight of Seasoned Wood in Pounds per Cubic Foot 



32. 

 Modulus of Elasticity. 



820,000. 

 Modulus of Rupture. 



10,500. 



Remarks. 



Rigida refers to rigid leaves. The name " Pitch Pine " is some- 

 times applied to all of the Southern pines. The name is yet 

 more widely applied in foreign markets. Sometimes called 

 Fat Pine. The tree is hardy. It sometimes grows on rocks 

 and sometimes over sea sands, binding them together. It will 

 survive occasional overflows of sea water. Resins present to 

 saturation, injure wood for constructions, while not themselves 

 so good as resins from other species. Young trees sprout from 

 stumps but do not always live long. The resr.tance to forest 

 fires is surprisingly great. 



