T. S. Hunt on the Chemistry of Natural Waters. 197 
sodium, calcium and magnesium, with or without sulphate of : 
soda, and saturated with carbonic acid, it was possible to obtain 
transparent solutions holding from 3°40 to 4:16 grams of carbon- 
ate of lime to the liter; of which however the greater part was 
deposited after twenty-four hours; when the solutions were found 
to contain somewhat less than 1:0 gram in the form of bicarbonate. 
Boutren and Boudet had previously shown that by saturating 
ime-water with carbonic acid, solutions were obtained holding 
in a liter 2:3 grams of carbonate of lime; of which one half was 
soon deposited, even when the solution was kept under a press- 
ure of several atmospheres. It would thus seem that saline 
Carbonate of magnesia. (This Journal [2], xxvii, 173.) 
$57. Salts of Barium and Strontium.—As will be seen from 
