S19 



have none but natural branches, the lo\rcr 

 tiers must be examined ; if they prove iri 

 health, the case is evidently to be im- 

 puted to their intercepting the sap ; and, 

 therefore, some of them must be thinned 

 out ; by which means, not only a passage 

 would be opened to, but an additional 

 supply of it would be furnished for, the 

 head. The latter circumstance might 

 likewise be promoted, by first thinning 

 the extended parts of the lower branches; 

 and the head, generally, afterwards ; if 

 the foregoing should not prove effectual. 

 In this case, the tree will prove bark- 

 bound, above the obstruction ; of course 

 it should there be scarified, as in the for- 

 mer case. It will be obvious, that the 

 means here recommended may be ap- 

 plied to the invigorating of weak trees in 

 general.' 



^ 



* This very serious evil is often occasioned by the 

 Designers of Grounds. Frequently they expend hun- 

 dreds, sometimes thousands, in removing earth ; in 



