are deposited in lay- being tied, has been patented by Mr. John Weeks and Frank The combining ratio is 100 of silicic acid to 398 of the ers, charcoal at bottom, and a few inches of gravel on top, H. Weeks, of Brooklyn, E. D., N. Y. The invention con- earthy bases. But it is a curious fact that… … developed since 1870, although something had been done in The report of our Consul at Sheffield, Eng., shows that a a small way prior to that date. The credit of the enterprise FILTERING CISTERN. vast increase has taken place in the exports from Sheffield is largely due to Hon. J. H. Ramsey, of…
Patents · Illustrated · Acid · Iron · Patented · Scientific American · Manufacture · Inches diameter · Hydrochloric acid · Electric lighting · Sewing machine · Wood working · Post office · Steam gauge · Sulphuric acid · Hot water
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