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    Features

    Improved Hoisting Machine

    Cheap Transit for Oil

    Power Required to Drive Cotton Machinery

    Morbid Mental Conditions

    A Switch Accident

    The Manufacture of Gem Stones

    Scientific and Practical Information - July 25, 1874

    A Safety Furnace

    Gang Saw Improvements

    Apparatus for Transplanting Trees

    Practical Education - July 25, 1874

    Earle's Improved Ice Creeper

    New Ice Making Process

    Improved Furnace for Melting Brass

    A Novel Balloon Ascent

    Decisions of the Courts - July 25, 1874

    The New Steamer Britannic-A New Iropeller Improvement

    Recent American and Foreign Patents - July 25, 1874

    Answers and Correspondents - July 25, 1874

    Communications Received - July 25, 1874

    Canadian Patents - July 25, 1874

    Departments

    • Letters

      Correspondence - July 25, 1874

    • Departments

      Bussiness and Personal - July 25, 1874

    • Index of inventions - July 25, 1874

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    July 25, 1874

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