Mineral Waters at Cheltenham. 83 



Experiment 11.— The powder thus separated by evapora- 

 tion was dissolved in muriatic acid. The usual tests, viz. 

 fluate of soda, oxalate oF potash, and succinate of ammonia, 

 showed that it contained lime and iron. Phosphate of soda 

 ivith carbonate of ammonia proved that it was free from 

 magnesia. The solution was therefore evaporated to dryness, 

 and the residue redissolved in dilute nitric acid. 



Experiment HI. — Into the nitric solution previously 

 highly concentrated by evaporation, liquid ammonia was 

 poured. The precipitate being collected was redissolved in 

 muriatic acid, and theoblained solution decomposed hv suc- 

 cinate of soda. The succinate of iron being redissolved in 

 muriatic acid, the solution was decomposed by carbonate 

 of potash. The obtained carbonate of iron weighed four 

 grains; which gives half a grain of carbonate of iron to each 

 gallon of the water. 



Experiment IV. — Into the muriatic solution, highly con- 

 centrated, sulphuric acid was dropt, and thfe whole evapo- 

 rated nearly to dryness ; the mass being softened with water 

 and the sulphate of lime C'.)llected. The product,, taking loO 

 grains to be equal to 70 of carbonate of lime, proved that 

 1848 cubic inches of this water contained 24' grains of 

 carbonate of lime ; which gives to each gallon of the water 

 3^ of a grain of that salt. 



Experiment V. — The fluid from which these salts had 

 been obtained (Kxpcr. I.) was evaporated to perfect dry- 

 ness, reduced to an impalpable powder in a warm mortar, 

 and digested repeatedly in alcohol. 



Experiment VI. — The alcoholic solution diluV^qd with a 

 small portion of water became turbid by sulphate of silver 

 and oxalate of ammonia; but phosphate of soda with carbo- 

 nate of ammonia effected no change when added to it. It 

 was therefore evaporated to dryness, and yielded four grains 

 of muriate of lime; which gives half a grain of this salt to 

 each gallon of water. 



Experiment VII. — The mass left from the alcoholic go- 

 lution (Exper. V.) was repeatedly digested in small quanti- 

 ties of cold water, till the fluid that Ijad been suffered to be 



f 2 in 



