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An examination of the analyses of the various mineral waters of the United States and elsewhere, seem to warrant these statements:
1. Many of the waters, like those of Saratoga, Carlsbad and Crab Orchard, contain a cathartic salt in such quantity that from half a pint to a quart of the beverage will act as an efficient laxative. One excellence of these purgatives is that they can be taken daily for an indefinite period without injury.
2. The activity of a salt designed to move the bowels is much impaired by excessive dilution. A saline solution, whose specific gravity is less than that of serum, passes by osmosis largely into the blood and out at the kidneys, instead of drawing water from the circulation and acting as a laxative.
3. Many, indeed most of the really valuable natural, crude, mineral springs contain ingredients which in quantity or quality are detrimental.
DIDAMA HD. MINERAL WATERS CRUDE AND REFINED. JAMA. 1893;XX(16):438–439. doi:10.1001/jama.1893.02420430004001b
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