BAILEY. | Classification of Mineral Waters. 99 
Ill. The chlor-sulfate group, or waters which contain about 
equal amounts of the sulphate and the chlorin ion. 
IV. The carbonate group, or those in which the carbonate 
ions (CO,) are abundant. 
V. The chlor-sulfo-carbonate group, or those containing con- 
siderable quantities of each of these ions. 
VI. The sulfid group, or those waters that give off hydrogen 
sulfid, and are commonly called sulfur waters. 
VII. The chalybeate or iron group. (This may also contain 
the few manganese waters.) 
VIII. The special group, or those waters containing some 
special substance, like lithium, borax, etc. 
IX. The soft water group, or those waters that contain only 
small quantities of any mineral substances. 
