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    Features

    Watchmaking in America

    The Carpenter Self-Threading and Self-Setting Needle for Sewing Machines

    Concrete Paving

    Social Classification

    Influence of Sound upon Rain

    As Regards Protoplasm

    Destructive Action of Illuminating Gas on Vegetation

    Raising of the Steamship "Scotland" off Sandy Hook

    Manufacture of Kumis

    Boiler Incrustations

    American Sumac

    By H. E. Colton

    Answers to Correspondents- September 10, 1870

    Official List of Patents- September 10, 1870

    Recent American and Foreign Patents- September 10, 1870

    Departments

    • Letters

      Correspondence- September 10, 1870

    • Recommended

      New Books and Publications- September 10, 1870

    • Departments

      Business and Personal- September 10, 1870

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    September 10, 1870

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