1^2 To the Agricultural Society. 



ufeful as a manure ; and to effed that, I conceived that 

 frequent ploughing might have the agreeable effeft ; for by 

 frequent ploughing, the earth would be pulverized, that any 

 fluid lighting on it would have an eafy communication, and 

 be much readier to penetrate the fame; and by frequent 

 turning up, from the bottom to the top, raw and uncharged 

 ground, it will make a vacuum ; that if any of the vegetable 

 particles fhould light on the fame, it will be much readier to 

 receive them, than that that had been already pregnated; 

 this is demonflrable by or from the certain quantity of common 

 fait, that can only be diifolved in a certain quantity of v/ater, 

 without difficulty, or by other fluids and bodies that are 

 capable of being pregnated with fluids. 



I commenced the experiment in the fpring and fummer 

 feafon of 1787, and have continued the fame every feafon 

 (except one) until the prefent, and find that it has the defired 

 effeft. 



The manner of preparing the fallow ground : — It ought at 

 leaft to be broke up before the iirft of June, and not turned 

 over altogether flat, but fo as to let the air and wind have an 

 eafy accefs in between each furrow, otherwife you will lofe 

 much of the manure that is floating then, on account cf the 

 fmoothnefs of your fallow, the compared Hate the Jbd is in, 

 and the want of cavities to contain them. About a week or 



