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Guarding Against the Submarine

Our Vast Steel Industry

The Stations of the Rapid Transit Subway

Roentgen Ray Burns

Electricity or Steam for High-Speed Railways

Admiral Sampson

The United States and the Metric System

The Photorama

The Venice of Long Island

Manufacture of Steel Rails--II

A New Heater

The Introduction of the Steam Turbine for Light and Power Work

By Frank C. Perkins

Buttes and their Formation

By Charles Frederick Holder

The Simms Armored War-Car

Automobile Department

Some Modern Automobile Accumulators

Monster Crustaceans at the American Museum of Natural History

By Walter L. Beasley

Business and Personal Wants


  • Departments

    Legal Notes - May 17, 1902

  • Recently Patented Inventions

  • Index of Inventions - May 17, 1902

  • Patents - May 17, 1902

  • Notes and Queries - May 17, 1902

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