[ 252 ] 



tells us, that loo grains native aerated barytes afForded him 138 of 

 cryftallized muriated barytes, but moft probably it retained fome 

 of the mother liquor. 



Hence I deduce, ifl, that as 100 grains muriatic acid, 1,140 

 contain 18,11 real acid, 56,94 of barytes took up that quantity. 



Consequently 100 grains mere bary tic earth take up 31,8 of 

 real marine acid, and aiford 155 of cryftallized muriated barytes. 



And loograins real marine acid {hould take up 314,46 of barytes. 



We may alfo remark, that the muriatic acid whofe denfity is 

 1,140, being mixed with twice its weight of water, will have its 

 fp. grav. 1,0+27 which is nearly the fame as that which Fourcroy 

 found beft adapted to fuch folution, namely, 1,0347 i ^"^ perhaps 

 if the temperature were equal would approach each other ftill 

 more nearly. It appears then that the real acid fhould be accom- 

 panied with 16 times its weight of water. 



adly. It follows, that 121,04 parts cryftallized muriated barytes 

 contain 78 earth, 24,8 acid, and 18,24 water, confequently 100 

 parts of the cryJlalU%ed fait contain 64,44 earth, 20,45 acid, and 

 15,06 water. 



And 100 grains cf the dejiccated contain about 70 of earth, 22 

 of acid, and 8 of water. 



(Per 



