476 
On Mineral Waters • 
salt or sulphat of magnesia, 4 grains of common salt or muriat of 
Soda, 6 grains of gypsum or sulphat of lime ; loss 2 grains. 
I received toward the latter end of July two quarts of this wa- 
ter, from the spring ; and as much from the pump ; which latter 
I did not analyse. There had been rainy weather for some days, 
With an interval of 4 or 5 fine days immediately previous to the 
Water being sent to me. 
The water from the spring being tested with the same reagents 
employed by Dr. Cutbush, exhibited the same general appearances 
and indications, except that oxalat of ammonia threw down but a 
slight trace of lime. 
Sixteen ounces avoirdupois, of the water carefully weighed, be- 
ing evaporated, yielded not quite five grains of saline matter : this 
was repeated, in white queen’s ware, and in florence flask, by 
means of the gentle evaporation of a spirit lamp : hence it should 
appear, that the water of this spring, is variable in the quantity 
of saline matter it contains. 
The saline matter from these evaporations was reduced to fine 
powder, and a part thrown on a well lighted coal : there was no 
appearance of deflagration, and therefore there were no indications 
of nitrats. 
On barely 5 grains from a pound of the water, finely triturated, 
I poured strong spirits of wine i this dissolved the muriats, and 
left behind the sulphats. 
I boiled for a minute, the sulphats in pure water barely suffi- 
cient in quantity to dissolve them : this would separate the sul- 
phat of soda, and the sulphat of magnesia. The residuum being 
dried into white silky crystals, was manifestly sulphat of lime ; 
amounting to barely two grains in weight. 
The alcoholic solution containing the muriats, was precipitated 
by nitrat of silver, and yielded about a grain of muriat of silver, 
indicating of a grain of pure muriatic acid : the nitrated solution 
precipitated by carbonat of potash, yielded about ^ of a grain of 
precipitate, which readily dissolving in a minute portion of diluted 
sulphuric acid, and remaining permanently clear, was not lime, 
but carbonat of magnesia. 
The solution of sulphats, precipitated by carbonat of potash, 
yielded also barely one grain of carbonat of magnesia. The re- 
maining liquors would contain a grain or thereabout of alkaline 
sulphat which I did not think worth while to ascertain minutely. 
The water of these springs, as is said, are diuretic, and of the 
