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    Features

    Oak Graining in Oil Colors

    The Influence of Intense Cold on Steel and Iron

    Knots and Splices

    Impregnating Wood with Tar or Other Preserving Material

    Portable Writing and Copying Case

    Belt Tightener

    Boardman's Combined Tool

    Rambles for Relics

    Silk Culture

    By W. V. Andrews

    Barnes' Ventilator for Mattresses, Etc.

    Smith's Infant Dining Chair

    Combined Trunk and Rocking Chair

    A Scientific and Technical Awakening

    The Sherman Process

    Rubber Tires for Traction Engines

    A Museum of Art and Natural History

    Warming and Ventilating Railroad Cars

    Report of the Judges of Group 1, Department V. of the Exhibition of the American Institute for 1870. The Allen Engine

    Lyceum of Natural History

    Central Shaft of the Hoosac Tunnel

    The Mineral Resources of Missouri

    Scientific Intelligence- March 18, 1871

    Answers to Correspondents- March 18, 1871

    Applications for Extension of Patents- March 18, 1871

    Official List of Patents- March 18, 1871

    Issued by the U. S. Patent Office

    Queries- March 18, 1871

    Recent American and Foreign Patents- March 18, 1871

    Departments

    • Letters

      Correspondence- March 18, 1871

    • Recommended

      New Books and Publications- March 18, 1871

    • Departments

      Business and Personal- March 18, 1871

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    March 18, 1871