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CHAPTER XXI. 



PROPERTIES AND USES OF TIMBER. 



As it is necessary that the forester should know 

 the properties of timber after it is cut down, and 

 the departments in which the different kinds of 

 it are principally in demand, as well as that he 

 should understand the culture and management of 

 growing trees — the following sketch, derived from 

 the most authentic sources to which the writer has 

 access, as well as from his own observation, is added 

 for the sake of such readers as may be desirous of 

 obtaining information on these points. 



It may be proper to premise, that wood newly 

 cut, when used in dry situations, or for purposes 

 where it is not exposed to moisture, is apt to shrink 

 from its original apparent size, and sometimes to 

 warp or twist. This is owing to the evaporation of 

 the natural sap ; and the bad consequences that 

 would arise from it are generally prevented by 

 what is called Seasoning, — that is^ allowing the 



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