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    Features

    Loss of the Campbell Air Ship

    A Fast American Steam Line to Europe

    Frederick J. Seymour

    Position of the Planets in August

    An Improved Valve for Steam Engines

    Hints on Glass Blowing

    An Improved Harness

    Electric Propulsion for Common Roads

    Electric Lamp Hanger

    An Improved Necktie

    Recent Discoveries in the Nebul by Means of Photography

    By Edward S. Holden

    The Paris Exhibition

    To Inventors- July 27, 1889

    Departments

    • Letters

      Correspondence- July 27, 1889

    • Recommended

      New Books and Publications- July 27, 1889

    • Departments

      Business and Personal- July 27, 1889

    • Recently Patented Inventions- July 27, 1889

    • Notes and Queries- July 27, 1889

    • Index of Inventions- July 27, 1889

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    July 27, 1889

    See the World from a Different Perspective

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