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Klaproth * found 420 grains of muriated magnefia evaporated 

 to drynefs to contain 290 of magnefia ; as it was precipitated by 

 foda he probably meant mild magnefia, which generally contains 

 but G,45 of earth ; if fo, 290 contained but 130,5 of mere mag- 

 nefia ; confequcntly 100 grains of muriated magnefia gently but 

 fenfibly dried fhould contain 31,07 mere magnefia, and this by my 

 computation fliould take up 34,59 of real acid. The remainder is 

 therefore water. 



Wenzel's experiments accord with mine with rcfped to the fu- 

 periority of the proportion of earth to that of acid in a given 

 weight of muriated magnefia. According to him 100 grains of 

 mere magnefia take up 122 of real marine acid; but by my com- 

 putation of the quantity of real acid in his fp. of fait, v. z. 23 

 per cent, allowing his mild magnefia 45 per cent, of earth, 100 

 grains of it fhould take up 1 15,8 real muriatic acid. 



Bergman's refults diiFer from thefe very widely, for according 

 to him 41 grains mere magnefia take up only 34 of the ftrongeft 

 marine acid. 



Se8ton 

 ■ • J Klapr. 369. 



