252 



than the last, may be treated the same as 

 such subjects in plantations; and the same 

 may generally extend to the trees which 

 are older, with this addition, — that such 

 as have la7'ge spreading heads should have 

 them reduced, by taking off part of the 

 most extended branches, where they di- 

 vide. 



At p. 133, the nature and tendency of 

 this sort of defect is sufficiently explain- 

 ed ; and, therefore, it need only be noted 

 here, as particularly common and detri- 

 mental in woods already thin ; for its 

 constant tendency is to increase the evil. 

 Reducing the heads, not only prevents 

 such increase but benefits the trees, (see 

 p. i6'6;) while the Bark and Wood, thereby 

 produced, create a fund, to discharge part 

 of the expences to be incurred by the 

 general improvement. 



The shelter of a wood is to be preserved, 

 first, by the pxirtial cutting of the under- 



