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Building American Locomotives in British Shops

The New Railroad and Trolley Tunnels Entering New York

Naval War-Game Between the United States and Germany

European Sale of Pupin's Telephone Patents

To Our Subscribers

The Army Signal Corps

A German Ambulance Train

Electro-Magnetic Rotations

By Howard B. Dailey

Machine for Removing and Disposing of Snow

Thomas Alva Edison

Spectral Photography

By George M. Hopkins

The New Armored Cruisers "Tennessee" and "Washington"

Leading Types of 1902 French Light-Weight Automobiles

Business and Personal Wants


  • Departments

    Science Notes - December 27, 1902

  • Correspondence - December 27, 1902

  • Recently Patented Inventions - December 27, 1902

  • Index of Inventions - December 27, 1902

  • Notes and Queries - December 27, 1902

  • Index - December 27, 1902

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December 27, 1902

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