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attributed this precipitation to the phlogifton of lime*. This ex- 

 planation not appearing to me fufficiently fatisfadory, I made 

 the following experiments : 



i°- Having diluted fome quantities both of nitrous and marine 

 acids with diftilled w^ater, I faturated both w'ith Carrara marble ; 

 another portion of this marble I converted into lime, and of this 

 lime I formed lime-water. 



2*^" To fmall portions of the folutions of this marble in each 

 of the above-mentioned acids I added lime-water ; in each a flaky 

 and fomewhat brownifli white precipitate appeared. 



^^- This precipitate was not foluble by an addition of pure 

 diftilled water. 



4"'' Neither was it increafed by an addition of more lime- 

 water ; yet it was fo fmall that I could not conceive it to con- 

 tain ail the calcareous earth in the nitrous and marine folu- 

 tions. 



5^- The liquor in which this precipitate appeared being fil- 

 tered, and the precipitate, thus feparated, more lime-water was 

 added to the filtered liquor, but no precipitate appeared; yet on 

 dropping into this liquor a frefh quantity of marine felenite a. 

 cloud was immediately difcernible. 



• See 17 Rozier for 1781, p. 218, 224 and 227. 



6°- The 



