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    Electrical Indicator for Showing the Rotation of the Earth

    By George M. Hopkins

    Progress of our Western Industries

    The Elevated Railroad Nuisance

    Steam Boilers

    Scientific American Export Edition for June

    Transmitting Power by Electricity

    The Eothen Arctic Expedition

    The Decline of the Whaling Industry

    Patent Matters in Congress

    Horizontal Condensing Engine at the Paris Exhibition

    Mr. Thomas A. Edison

    Patteson's Improved Car Coupling

    Astronomical Notes - July 6, 1878

    By Berlin H Wright

    Improved Self-Oiling Car Wheel

    Radial Drilling Machine

    Improved Wrench

    The Whitehead Torpedo

    Edison's Telephonic Researches

    Departments

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      Business and Personal - July 6, 1878

    • Notes and Queries - July 6, 1878

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    July 06, 1878

    See the World from a Different Perspective

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