Chicago : Engineering and Contracting Pub. Co. · leaf 90
by adding lime and sodaash. Therefore, it is customary at Columbusto leave 10 parts per million of magnesium, 40parts per million of carbonate of lime, and 40parts per million of incrustants in the filteredwater. The Scioto flows for miles through a lime-stone country and the spring waters which… … 3.—Chemical Store House, Water Purification Works, at Columbus, Chio.
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Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
