B. 3-] INTRODUCTION. 315 



But while we fearch after, and bring up 

 this " hidden treafure," let us not be too 

 fanguine. Let us be careful not to bring 

 up in mixture with it, what would not fail 

 to thwart our beft intentions, cankering 

 gravel, irony till, or corroding fand. 



What next comes in point, and is emi- 

 nently ufeful, whether for improving this 

 new acquifition, or refrefhing, and in a great 

 meafure reftoring, the exhaujied foil, is the 

 difcreet application of manure. There are 

 many kinds of this moft ufeful ingredient. 

 The judicious will always apply that which 

 is moft evidently calculated to enrich and 

 divide the foil, if over tenacious, or which 

 will add adhefion to, and alfo enrich it, if 

 too light and porous. 



Next follows, fkilful, and moderate crop- 

 ping. In refpecfl of the former, pra&ice 

 and experience alone can enfure fuccefs, and 

 the attainment of perfection. In refpe<5t of 

 the latter, whoever fhall bear in mind, that 

 it is as neceflary for land to reft from pro- 

 ducing, as for man to reft from labour, and 

 that it is of as bad confequence to over- 

 burthen land with crops at any time as 

 man with labour, will not fail to tread the 



right 



