BaILEy. | Classification of Mineral Waters. De 
so that their composition may be different after a time. The 
change might be as follows: Na,CO,+CaCl,—CaCO,+2NaCl. 
This change was noticed in the case of the Harrowgate (Eng.) 
waters, which, after several years, were found to be saline 
rather than alkaline in character. 7 
In the third class Doctor Buck would include sulfuric acid 
only. He admits that such springs are rare. The Oak Or- 
chard springs (N. Y.) contain 13.37 grains of sulfuric-acid to 
the pint, and the Rockbridge Alum (Va.) springs contain 2.34 
grains. 
In the fourth class he would include those like the Rock- 
bridge Alum, containing 3.01 grains alumina out of 5.80 solids 
per pint. ‘There are some arsenical springs in France that con- 
tain .1 of a grain of white arsenic per pint. The Dentonian 
well, Ballston (N. Y.) has .95 grains arsenic per pint. 
The classification suggested by Walton“ is as follows: 
Gales Ere: 
. Acidulous (carbonic acid.) 
Muriated (chlorid of sodium.) 
I. Alkaline waters......... 
Pure. 
Alkaline. 
Todo-bromated. 
Alkaline. 
Saline (chlorid of sodium.) 
Calcic. 
II. Saline waters: 
(Chlorid of sodium.) 
III. Sulfur waters......... 
Pure. 
Alkaline. 
Saline (sodium chlorid.) 
Calcic. 
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IV. Chalybeate waters.... 1 
( Aluminous. 
Epsom salts (sulfate of magnesia.) 
. Glauber’s salts (sulfate of soda.) 
Alkaline. 
Limestone (carbonate of lime.) 
VI. Calcic waters......... . Ginsu (Guillate oO ime) 
Pure. 
. Alkaline. 
. Saline (chlorid of sodium.) 
Sulfur. 
. Calcic. 
V. Purgative waters....... 
c 
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VII. Thermal waters...... 4 
OURS CS ROS RO (coho Ft) DUS CoN CORES CORO FS Cobo 
41. Mineral Springs of the United States and Canada. 
7—Vil 
