348 Analysis of the Clinton Mineral Water. 



consisting of 2 grains of acid and 1 grain of magnesia. Now, the 

 7 grains of sulphate of baryta obtained as above, contain 2.38 grains 

 of sulphuric acid, two of which belong to the one grain of magnesia, 

 and the remaining 0.38 grains belong to its equivalent 2.35 grains of 

 soda, forming 2.73 grains sulphate of soda. These quantities doub- 

 led, give sulphate of magnesia, 6 grains, and sulphate of soda, 5.46 

 grains. 



b. The second half of the solution was neutralized with nitric acid, 

 and treated with sulphate of silver ; the resulting chloride heated to 

 semi-fusion, weighed 64 grains, equivalent to 26.3 chloride of so- 

 dium, which doubled, gives 52.6 grains for the gallon of water. 



Separation of carbonate of potassa. 



H. The residuum from the evaporation of one gallon of the fresh 

 water, was repeatedly washed with small portions of water. Tar- 

 taric acid threw down crystals of bi-tartrate of potassa, which, when 

 reduced to the state of carbonate by heat, weighed 3 grains. 



Separation of carbonate of ammonia. 



I. A pint of the fresh water was submitted to distillation in a glass 

 retort furnished with a large receiver ; to the fluid that passed over, 

 muriatic acid was added to saturation, the crystallized muriatic re- 

 sulting, weighed .9 grains, nearly equivalent to about 5 grains of car- 

 bonate of ammonia for the gallon. 



K. To obtain the gaseous matter, 14 oz. of the fresh water, filling 

 a mattress with a small bent neck, were boiled till no more gas came 

 over. 8 cubic inches were received over mercury, 7.6 of which 

 were absorbed by caustic potassa, passed up into the receiver for the 

 purpose. The remainder, exposed to the action of sulphuret of lime, 

 was reduced one fifth. A similar residue, in another experiment, 

 detonated strongly mth hydrogen in a Volta's tube ; leaving no doubt 

 of its being atmospheric air. 



Supposing the gallon to weigh 128 ounces, we have 



14 : 128: :7.5 : 68.57 cub. inches of carbonic acid, and 

 14:128:: .5: 4.57 do. atmospheric air. 



From these experiments we have, for the gallon of mineral water, 



