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pafture, as I have before obferved in 

 treating of Natural Grafles. 



Clays, of every kind, are highly fuit-^ 

 able to all fandy, or light foils ; becaufe 

 they brace the loofe particles together, 

 give them ftrength, and keep them moifl:. 



By parity of reafoning, fand is equally 

 beneficial upon all clays, and other tena- 

 cious, iliff land -, becaufe it feparates the 

 parts, and deftroys their cohefive quality; 

 by which means the fun, air, and froft 

 penetrate them the better. This muft 

 be very obvious to every one; yet very 

 little of this has been done, in propor- 

 tion to the vaft improvement it may ef- 

 fect, and the variety of fituations v^rhere 

 it will be found to anfwer. Upon this 

 lafl principle, clofe land, inclined to 

 ilones,. ought not to have them picked 

 out. 



Sand is 4ikewife of great ufe upon 



rough. 



