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with four tines (which is the befl: inflrument I know 

 of tor fliaking the weeds out of the foil) at leaft 

 four times, but it never had a grain of manure of 

 any kind whatever; that I purpofely withheld in 

 order to prove to what degree of improvement land 

 might be brought by the force of cultivation folely. 

 Hitherto the fuccefs has greatly exceeded my ex- 

 pedlation; if the fuccefs of another year upon this 

 fame part of the field fhould prove fuperior, or 

 even equal to the laft, the fact will be eflabliflied 

 beyond the poflibility of a doubt, that land in its 

 nature rather unfertile, impovcriilied, and made 

 very foul by bad management, may, by the proper 

 ufe of the fpade and hoe, or the plough and harrow, 

 be made fertile, and to bear profitable crops, 

 without the leaft aid from manure of any kind 

 w;hatever. 



It has been obferved by Mr. Tull, and by 

 others fince his time, that frequent ploughing and 

 harrowing, and reducing the foil to a perfed tilth, 

 incrcafe and extend the pafturc of plants; but this 

 could be of no great ufe, if the matter or fubftance 

 which conftitutes their aliment were not increafed 

 alfo. During the courfe of thefe experiments, I 

 made feveral obfervations, which clearly explain to 

 my own fatisfaclion, how dividing and pulverizing 

 the foil becomes the proper mode of conveying the 

 glimcnt, prepared by nature for the fuftenance of 



plants, 



