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    Features

    The High-Level Street Railways of New York

    Counterfeit Coin

    Silver Mining in Massachusetts

    Formation of Planetary Rings and Satellites

    Silver in Art

    Artificial Fuel

    Improved Automatic Knife Grinder

    Vertical Engines and Boilers

    School Shops

    Astronomical Notes

    By Berlin H. Wright

    Notes of Patent Office Decisions

    Firework Making

    Method of Correcting a Leasing Screw

    By Joshua Rose

    The Glass Ball Caster

    The Industrial West

    Remains of Gigantic Antediluvians

    The Prairie Dog and Its Uninvited Guests

    Cooking by Solar Heat

    Producing Accurate Spheres

    Mexican Flora

    Organography, or Vegetable Anatomy

    Communications Received

    Departments

    • Departments

      Business and Personal

    • Index of Inventions

    • New Books and Publications

    • Notes and Queries

    • Patents

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    June 15, 1878

    See the World from a Different Perspective

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