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prover muft in this be guided by circum- 

 fiances j but whatever he ufes, he fliould 

 lay a thin cover of ftrav^^, fern, or young 

 ling, to prevent the earth from falling into 

 the crevices of the flone or wood. 



The prices of ths work will depend on 

 the general ra.es of labour in the neigh- 

 bourhood i in none will the expence be any 

 thing comparable to the profit. The be- 

 nefit of thefe drains is immenfe; in many 

 foils they are actually alone fufficient to 

 convert bad land into good — to more than 

 doubling the rent. Whenever a wet foil 

 is met with, I would on all accounts re- 

 commend to the improving landlord to 

 determine immediately the drainage. He 

 can in no way lay his money out in a more 

 judicious method j nor in one more certain 

 of paying him. In the wet foils which are 

 converted from arable to grafs, this im- 

 provement will be found of the utmoft ex- 

 pediency, the grafs will come with fur- 

 prizing luxuriancy after this work. 



The number of common farmers who 

 execute fmall quantities of it, fhew plainly 

 their idea of the profit attending it : here 

 and there a great farmer, who has money 

 fufficient, drains his whole farm in this 



manner 



