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Features

The Cause and Cure of Hay Fever

Intermediate Batteries on Battleships

Great Economy of the Motor Cycle

Eye-Bar Cables

Distribution of Trade at the Ports of the United States

Alcohol as an Illuminant

Expansion of Electric Railways in Massachusetts

By Alton D. Adams

A Floating Piston

A Non-Freezing Valve

The Pulque and Mescal of Mexico

By Charles Richard Dodge

The Automobile as a Plow Horse

By W. Frank M'Clure

Blackwell's Island Bridge

Experiments with Motor-Driven Aeroplanes

A Singular Profession

By C. F. Holder

A Ship Brake

The Seas of Fog

By Emile Guarini

Business and Personal Wants

Departments

  • Some Interesting Models

  • Departments

    Science Notes - September 19, 1903

  • Recently Patented Inventions - September 19, 1903

  • Notes and Queries - September 19, 1903

  • Index of Inventions - September 19, 1903

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September 19, 1903

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