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Features

Pre-Columbian Remains in Massachusetts

The End of the Century Steam Engine - December 23, 1899

The American Bridge

Report of the Weather Bureau - December 23, 1899

The Recent Welsbach Decision

The Proposed Tunnel under the Straits of Gibraltar

The Pollok Life-Saving Prize

A Back-Pedaling Brake for Chain and Chain-Less Bicycles

An Insect-Powder Duster for Plants

An Electric Hose Wagon

The Late Alaska Earthquake - December 23, 1899

Railways of the World Compared - December 23, 1899

A New Rotary Engine

Some Ostrich Stories

Key West

Departments

  • Joseph Henry

  • Departments

    Business and Personal - December 23, 1899

  • Recently Patented Inventions - December 23, 1899

  • Notes and Queries - December 23, 1899

  • Index of Inventions - December 23, 1899

  • Patents - December 23, 1899

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December 23, 1899

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