a 
On the Mineral Springs of Canada. 177 
These may be so combined as to give in 1000 parts of the 
water the following composition : 
Chlorid of sodium, : : . 8-42860 
“of potassium, . : . 03820 
Bromid of sodium, : - . 00460 
Iodid of sodium, : 5 . 00850 
_ Carbonate of soda, : . .  °32606 
* f baryta, . ’ ; °° -ORar 
oo Or strontia;**. : . 00960 
«of lime, ; ; 34900 
“of magnesia, ; . 35590 
spate gh : : : 
Alumina, ‘ oh a2 
Silica, . : : ; , 2° “O5E00 
Carbonic acid, : : . 31250 
Water, . . 990-10067 
1000-00000 
_ The calculated amount of solid matters in 1000 parts of water 
in 9-58683 ; experiment gave of residue dried at 300° F., 9°420 
in 1000. The small portion of carbonic acid, whichis not suffi- 
cient to form bicarbonates with the earthy bases, is connected with 
the presence of carbonate of soda, which, as I have shown in 
the alkaline waters of Caledonia, forms a double salt with the 
carbonate of magnesia.* The quantities of adventitious gases as 
carburetted hydrogen, nitrogen and oxygen, which are present 1m 
small portions in these waters, were not determined. ‘I'he amount 
of the carbonic acid gas equals 15-78 cubic inches in 100. 
_ For the separation and determination of the baryta and stron- 
tia the following method was adopted.t Having evaporated sev- 
eral litres to dryness with an acid, to separate the silica, the resi- 
ue was dissolved in a small quantity of water, mixed with a 
little dilute sulphuric acid, and allowed to stand for twenty-four 
ours. At the end of this time the precipitate then formed was 
collected on a filter, slightly washed, dried and fused with car- 
bonate of soda. The mass thus obtained was treated with water, 
and the carbonates after being well washed were dissolved in 
hydrochloric acid, the solution evaporated to dryness, dissolved in 
a little water, and mixed with a solution of hydrofluosilicie acid, 
_ Which on standing gave a granular precipitate of the fluosilicid of 
ium. The filtrate from this (the washings being rejected as 
holding in solution a little of the baryta salt), gave with a solu- 
tion of gypsum after some time, a precipitate of sulphate of stron- 
ao gis 
* See this Journal, vol. ix, p. 272. 
See Fresenius Quant. Anal., p. 293, ef seg. 
23 
Stcon » Series, Vol. XI, No. 32.—March, 1851. 
