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Electrical Indicator for Showing the Rotation of the Earth

By George M. Hopkins

The Elevated Railroad Nuisance

Progress of our Western Industries

Steam Boilers

The Decline of the Whaling Industry

Patent Matters in Congress

The Eothen Arctic Expedition

Scientific American Export Edition for June

Transmitting Power by Electricity

Horizontal Condensing Engine at the Paris Exhibition

Patteson's Improved Car Coupling

Mr. Thomas A. Edison

Astronomical Notes - July 6, 1878

By Berlin H Wright

Improved Self-Oiling Car Wheel

Improved Wrench

Radial Drilling Machine

The Whitehead Torpedo

Edison's Telephonic Researches


  • Departments

    Notes and Queries - July 6, 1878

  • Business and Personal - July 6, 1878

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