Excerpt from History of the Chicago Artesian Well: A Demonstration of the Truth of the Spiritual Philosophy, With an Essay on the Origin and Uses of Petroleum
Mr. Shufeldt:
Dear Sir: I send herewith the result of a chemical examination of the sample of water which was transmitted to me by you, as coming from the Artesian Well. A gallon of this water holds 71 72-100 Troy grains of solid mineral substances in solution. They consist mainly of carbonate of lime and carbonate of magnesia, with smaller proportions of sulphate of lime and sulphate of magnesia, chloride of magnesium, very little chloride of sodium, and traces of alumni and silicic acid.
Owing to the mineral ingredients which it contains, it deserves the name of a ("temporary") hard water. I found it, contrary to the prevailing opinion, free of sulphuretted hydrogen. It is beautifully clear and transparent, and therefore most admirably adapted for drinking purposes.
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