874 



ANALYSIS OF A MINERAL WATER. 



Precipitates 

 treated with 

 muriatic acid, 



vious examination was known not to contain any sulphate of 

 lime, was added to the former. 



47. The precipitates obtained from the mineral water by 

 46 were treated with strong muriatic acid, and boiled in it, 

 and caustic il- wmcn did not completely dissolve them. The undissolved 

 kali. powder was washed and boiled for some time in a silver cru- 



cible, with a strong solution of pure potash. The solution 

 was diluted, the powder separated, and again treated with 

 muriatic acid, washed, and dried in a red heat. This pow- 

 der weighed gr. 2*6. 

 The solution 48. The washings were all added to the solution formed in 



thT^ptate 47, anfl the whole P reci P itated b ) T subcarbonate of soda. 



examined. The supernatant solution was neutralized and the precipi- 

 tate washed. It was redissolved in muriatic acid. The 

 muriatic solution was neutralized, diluted, and treated with 

 prussiate of potash and iron. The precipitate thus formed 

 was calcined to destroy the prussic acid; nitric acid was ab- 

 stracted from it two or three times; and then it was dissolv- 

 ed in muriatic acid. The solution was high coloured, it was 

 diluted with water, and precipitated by carbonate of potash.. 

 The precipitate was separated by filtration, washed and 



Subcarfecnate dried. The subcarbonate of iron thus obtained weighed gr. 

 5.3. 



49* The liquor left after filtering off the subcarbonate of 

 iron in the last operation, was boiled for three quarters of 

 an hour or more, a light coloured precipitate after some time 

 began to separate, which soon became darker coloured. 

 This powder, which I conclude to be carbonate of manga- 

 nese, when washed and dried weighed gr. 0*7 5. 



50, The muriatic solution that was filtered off from the 

 prussiate in 48 was accurately neutralized. Oxalate of am- 

 monia was then dropped in gradually, as loug as a precipi- 

 tate formed. The oxalate of lime, when washed and dried, 

 weighed gr. 3*1 zz gr. 1*5 of pure- lime, or gr. 3*1 of carbo- 

 nate of lime. 



51. The solution left in fifty was then treated with pure 

 potash. The precipitate was separated, washed, redissolved 

 in muriatic acid, and again precipitated by subcarbonate of 

 soda, washed, and dried in a heat of near 20f)°* It weighed 



52. This 



of iron. 



Carbonate of 

 manganese. 



Carbonate of 

 lime. 



