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    Features

    Application of Electricity to Tunneling

    The Nullification of the Patent Laws

    A Blow at the Industries of Indiana

    Working Cold Wrought Iron

    Restoration of American Shipbuilding

    Magnetism in Cities

    Blotter

    Process of and Apparatus for Blocking Ice

    Engine Lubricator

    Improved Double Mould Board Plow

    Hose Reel

    Soemmering's Electric Telegraph

    The Strength of Lead Pipes

    The Chimpanzee and Koolokamba

    Nut Lock

    Agricultural Inventions - January 19, 1884

    Mechanical Inventions - January 19, 1884

    Miscellaneous Inventions - January 19, 1884

    Insurance - January 19, 1884

    Aetna Insurance Company of Hartford

    Engineering Inventions - January 19, 1884

    Departments

    • Letters

      Correspondence - January 19, 1884

    • Departments

      Business and Personal - January 19, 1884

    • Index of Inventions - January 19, 1884

    • Notes and Queries - January 19, 1884

    • Patents

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    January 19, 1884

    Reanimate Your Brain

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