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each have been faid to ground their opinions upon 

 experience. Perhaps both may be right; and 

 after all butter may be innocent or mifchievous, 

 according as it contains many or few adventitious 

 materials collected frorli vefTels, &c. ufed in the 

 procefs of making it. 



I am led to thefe conjectures by obferving, that 

 in almoft all the great dairies, the milk is fuffered 

 to (land in lead, brafs, or copper velfels, to throw 

 up the cream. The clofenefs of the texture of 

 thefe metals, and their coldnefs and folidity, con- 

 tribute to feparate a greater quantity of cream from 

 the milk than would be done by wooden trundles* 

 or earthen pans, both of which are alfo fometimes 

 made ufe of. 



As I wifh to eftablifh the poffibility of the fact, 

 that milk may corrode or diffolve particles of the 

 vefTels above-mentioned, and therefore be liable to 

 communicate pernicious qualities to the butter, I 

 beg leave to fubmit my reafons, from which I draw 

 this conclufionj and if my opinion mould appear 

 fatisfactory to you, I make no doubt but you will 

 do all in your power to difcountenance the farther 

 ufe of them ; efpecially as I fhall point out others, 

 which may be made, and will do as well for the 

 dairyman's purpofe. 



Whoever 



