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Features

Salt-Water Mains for Fire Protection

Future Extension of the Subway System

A Floral Map of the United States at the St. Louis Exposition

Borings on a Coral Reef

The United States in 1903

Concrete Piling

A New System of Rapid Telegraphy

A Single-Cylinder, Reversible, Four-Cycle Gasoline Engine

A New Gasoline Motor for Airships

The New Vickers-Maxim 9.2-Inch Wire-Wound Gun

The Abruzzi Polar Expedition.—I

The Hudson River Tunnel

Harrow Tooth and Simple Fastening Device

Combination Lock for Umbrellas

Valve Mechanism for Locomotives

Patent Department

Improved Windmill

Bending Device

Ore-Sampling Machine

Mail Box for Rural Free Delivery Routes

Business and Personal Wants - March 26, 1904

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Departments

  • Departments

    Science Notes - March 26, 1904

  • Correspondence - March 26, 1904

  • Notes and Queries - March 26, 1904

  • Recently Patented Inventions - March 26, 1904

  • Index of Inventions - March 26, 1904

  • New Books, Etc. - March 26, 1904

  • Patents - March 26, 1904

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March 26, 1904

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