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Scientific American, Vol. 71, No. 1 (1894) (1894)

leaf 3

An illustration from Scientific American, Vol. 71, No. 1 (1894), 1894, leaf 3
o. It is probable that, before the natural gas supply of AN AUTOMATIC SELF-CLEANSING WATER FILTER. certain parts of the United States is exhausted, this AN IMPROVED RAIL JOINT. The filter shown in the illustration is designed for gift of nature will be better utilized than has hitherto use where… … theoretically capable of producing 51 tons of ice daily at a cost of not more than 50 cents per ton; and, after all, if delivered in its expanded state to furnaces, ete., its service from the mains of a city water works, and tle gas would produce, on burning, as much heat as its construction is…

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