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prodigious quantity of manure to ferti- 

 lize it. 



Some gravels are fo (harp and burning, 

 that they produce nothing except in wet 

 fummers ; but fuch are known at any feafon 

 of the year. 



Sands are as various as gravels, and are 

 all eafily difcoverable in their natures : The 

 rich black fand is, I believe, as profitable a 

 foil as any in the world : It has, at all fea- 

 fons, a dry foundnefs, and at the fame time 

 a moifture without wetnefs, which fecures 

 crops even in dry fummers. The fpade is 

 fufficient to try it, at any feafon of the 

 year. 



The light fandy loam is, likewife, an 

 admirable foil ; it will bear ploughing, like 

 the preceding, all winter long, and appears 

 quite found and mellow when tried with 

 the fpade. If it lies under a winter fallow, 

 the beft way to judge of its richnefs, is to 

 remark the fize of the furrows, and the 

 degree of adhefion in the foil. In clay foils, 

 the great excellency is the refembling fand 

 in many circumftances ; and in the fandy 

 ones, the fimilarity of clay. Thus ftiff 

 land, being dry and crumbly, is a great 



perfection 5 



