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High Tension Currents in Crowded Centers

Naval Notes

Amito's Stair Climber

An Improved Dumping Car

An Improved Chimney Cover

An Improved Curtain Ring Attachment

An Improved Device for Felling Trees

An Improved Screwdriver

An Improved Window Screen

Passenger Ships of the Transatlantic Service

The Saber-Toothed Tiger

Utilization of Poor Fuel

Henry M. Stanley

Multnomah Falls on Columbia River


  • Recommended

    New Books and Publication- December 21, 1893

  • Departments

    Recently Patented Inventions- December 21, 1893

  • Business and Personal- December 21, 1893

  • Notes and Queries- December 21, 1893

  • Index of Inventions- December 21, 1893

  • To Inventors- December 21, 1893

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December 21, 1889

Confronting Common Wisdom