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    Deep Mines in Nevada

    The Future of the Electric Railway

    The American Chemical Society

    Food Adulteration

    Oysters at Quinnipiac

    Binocular Vision in Telescopes

    By Charles B. Boyle

    New Electric Lamp

    New Style of Moulding

    The Steam Engine Indicator

    A New Motor

    Miscellaneous Inventions

    A Useful Steam Boiler Appliance

    New Ceiling and Wall

    Improved Mill Pick

    Engineering Inventions

    The Crinoids of Crawfordsville

    By H. C. Hovey

    American Industries.--No. 45

    Porcelain Chimney-Piece

    Mechanical Inventions

    Wheat Production of the World

    Communications Received

    Departments

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      Correspondence

    • New Inventions

    • Business and Personal

    • Notes and Queries

    • New Books and Publications

    • Index of Inventions

    • Patents

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    June 12, 1880

    See the World from a Different Perspective

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