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    A Heat Flywheel

    To Secure Better Rails

    Investigations for the Gatun Dam

    Former Chief Engineer Stevens on the Canal

    Machine for Making Window Glass

    The Wright Aeroplane Experiments

    The Current Supplement

    Metchnikoff's Theory of Longevity

    Copper-Clad Steel

    Motors for Viticulture

    The “Caterpillar” Tractor

    By the English Correspondent of the Scientific American

    Range and Position Finders for Coast Artillery Fire Control

    The Annular Eclipse of the Sun in June, 1908

    By Frederic R. Honey

    A Magazine for the Blind

    How Cave Air is Used to Regulate the Temperature of a House

    By C. H. Claudy

    A New Electric Renovator

    A French Universal System of Machine Molding

    By Frank C. Perkins

    Patent Department

    Rail Lock and Tie Plate

    Improved Switchboard Plug

    Hose Nozzle with Movable Spray Cap

    Folding Washing Machine for Stationary Tubs

    Folding Step Ladder

    Departments

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      Correspondence - May 16, 1908

    • Notes and Queries - May 16, 1908

    • Recently Patented Inventions - May 16, 1908

    • New Books, Etc. - May 16, 1908

    • Index of Inventions - May 16, 1908

    • Patents - May 16, 1908

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    May 16, 1908

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