Analysis of the Clinton Mineral Water. 347 



grains, we have 4.98 grains chloride of sodium, and 1.92 grains 

 chloride of magnesium, with a Httle coloring matter as the constit- 

 uent of the alcoholic solutions. 



D. Examination of the carbonates, &c. Cold dilute muriatic acid 

 was added to the 79.5 grains, (process A.) The whole was dis- 

 solved with effervescence except 2.25 grains of colored matter, 

 which ignition reduced to .5 grains. This was further decomposed 

 into 0.25 grains of sulphate of lime, 0.20 grains of silica, and 0.05 

 grains oxide of iron. 



E. To the muriatic solution of the last process (D,) ammonia was 

 added till a little oxide of iron with a very little magnesia fell ; these 

 being separated, carbonate of ammonia threw down 32 grains of 

 carbonate of lime of a yellowish cast. They were redissolved in 

 nitric acid, boiled, and treated with ammonia ; oxide of iron with a 

 little magnesia was precipitated j the remaining solution, with carbon- 

 ate of soda, yielded carbonate of lime, 29.5 grains perfectly white. 



The oxide of iron and magnesia which fell in this process were 

 contaminated with a little extractive matter, which burned off during 

 ignition ; the remainder, 2 grains, consisted of J a grain magnesia, 

 and 1| oxide of iron. 



F. The muriatic solution (of D and E,) from which the 32 grains of 

 carbonate of lime were obtained, was treated with phosphate of soda. 

 Phosphate of ammonia and magnesia subsided in small crystals, 

 which, reduced by heat to the state of phosphate, gave 38.5 grains, 

 equivalent to 33.7 grains of carbonate of magnesia. 



Examination of the salts, &;c. insoluble in alcohol, (B.) 



G. Cold water added to the 91.5 grains, (left in process B,) pro- 

 duced a brownish solution, which left on the filter a little colored 

 matter. It was evaporated to dryness; on redissolving and filtering, 

 another colored portion was obtained. By repeating the evaporation, 

 solution, &c. the fluid became nearly colorless, when it was divided 

 into two equal parts by weight. 



a. The first half of the solution was treated with acetate of baryta j 

 the resulting sulphate, after being ignited, weighed 7 grains. The re- 

 maining fluid was reduced by evaporation to a dry mass, which, af- 

 ter ignition, was washed to separate soluble salts. The insoluble re- 

 mainder was then digested in dilute sulphuric acid, which took up 

 magnesia, and left 1 grain sulphate of baryta, (formed from the ex- 

 cess of acetate.) The sulphate of magnesia which crystallized from 

 the solution and was rendered anhydrous by heat, weighed 3 grains, 



