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Salt-Water Mains for Fire Protection

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

Future Extension of the Subway System

Borings on a Coral Reef

The United States in 1903

Concrete Piling

A New Gasoline Motor for Airships

A New System of Rapid Telegraphy

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

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

Patent Department

Combination Lock for Umbrellas

Valve Mechanism for Locomotives

Ore-Sampling Machine

Improved Windmill

Mail Box for Rural Free Delivery Routes

Bending Device

Business and Personal Wants - March 26, 1904

READ THIS COLUMN CAREFULLY……..

Departments

  • Departments

    Science Notes - March 26, 1904

  • Correspondence - March 26, 1904

  • Recently Patented Inventions - March 26, 1904

  • Notes and Queries - 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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