[ 251 ] 



ad. Br my ftatements loo parts fylvian contain 36 of real 

 acid, then 55 parts of this fait fhould contain 19,8; aifo loo parts 

 common fait contain 38,88 real acid, then 51,06 parts of this fait 

 fliould contain 19,85. 



SeSl'ton 3^. 



MURIATED BARYTES. 



The proportion of ingredients in this fait may be invefligated 

 from the following fails : 



ift. Klaproth found that 73 grains of aerated native barytes 

 (which contained an inconfiderable proportion of ftronthian) fa- 

 turate 100 grains of muriatic acid, whofe fp. grav. was 1,140 di- 

 luted with 200 grains of water, and that 100 grains of aerated 

 barytes contain 22 of fixed air, 2 Chy. An. 1793, p. 195 and 19D, 

 and I Klapr. 269, therefore 73 grains of aerated barytes contain 

 56,94 of barytic lime. 



2dly, He found that 56,59 pure aerated barytes diffolved in this 

 acid afforded 6850 of cryftallized muriated barytes. 2 Kiapr, 84. 



Then 100 grains of aerated barytes, or 78 of mere barytes, 

 would give 21,04 of muriated barytes. And 100 grains of mere 

 barytic earth fliould give 155 nearly of cryftallized muiiated 



barytes. 



According to Fourcroy, 4 An. Chy. 71, 100 grains native 

 barytes afford but 112 of deficcated muriated barytes; yet Pelle'ier 



I i 2 tells 



