d at l-100,000th,thatof the chromic acid testat l-600,000th, and that of the permanganate at l-900,000th. Asregards the use of the permanganate, the author distinctlystates that the honor of its discovery belongs to Dr. Wm. A. Guy, of London. ■««»■■ IMPEOVED GATE. Swinging gates are not only liable… … and opening endwise on pivoted bars attached to the gate-post, is not interfered with by sagging, or by accumulationsof snow. It is the invention of J. R. Breese, of MiddletownN. Y.
Patents · Iron · Machinery · Naphthaline · Machine · Scientific American · Railroad · Short time · Sewing machine · Antedated january · Steel cylinder · Carbonic acid · Stand pipe · Perpetual motion · Letters patent · Jersey city
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