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LETTER III. 



T IMiNG throughout the moor coun- 

 tries has been long the univerfal 

 praclice. In moft parts of the northern 

 counties, they make it a univerfal manure; 

 probably it is in cultivated countries more 

 ufed than it ought to be. 



Many very ingenious men have flarted 

 objections to liming even moors ; and they 

 found their opinions (for they do not pre- 

 tend to offer experiment) on the qualities 

 of lime where ever found. They want to 

 have it explained with a philofophical 

 precifion, how a body that of itfelf is no 

 food for vegetables, fhould prove fo rich 



a manure. Now I am fenfibie of being 



very unequal to fuch fpeculative points ; and 

 as I never condu6led a feries of chymical 

 experiments on lime, Iconfequently, cannot 

 fpeak from my own experience, but if we 

 compare the qualities which chymifts give 

 to lime, with the nature of the moors, 

 there will, I apprehend, be no difficulty in 



accounrtng 



