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Features

Competition in Submarine Construction

A New Explanation of Raised Ocean Beaches

New Transatlantic Records

Joining the Blackwell's Island Bridge Cantilevers

Death of John Burry

The Use of the Cinematograph in Medicine

The Current Supplement

Reinforced Concrete in Shipbuilding

How to Take Advantage of Variations in Rates of Gas and Electricity

The First Successful Trial of a New American Aeroplane

The Largest Fresh-Water Dock in the World

By W. Frank M'clure

Water Vapor on Mars

By S. A. Mitchell

The Fourth Dimension Simply Explained

By J. Springer

A Unique System of Illumination for Harbor Channels

The Mutual Relations of Geometry and Mechanics and Prof. Reuleaux's Mechanical Movements

By Alfred Gradenwitz

Photographs with Tapestry Effects

By Gustave Michaud

Bell Piano

Ax Attachment for Sawing Logs

An Improved Railway Spike

Combined Chair and Cabinet

Combined Steam and Hot-Water Heating Apparatus

Oddities in Inventions

Departments

  • Departments

    Notes and Queries - March 21, 1908

  • Recently Patented Inventions - March 21, 1908

  • New Books, Etc. - March 21, 1908

  • Index of Inventions - March 21, 1908

  • Patents - March 21, 1908

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March 21, 1908

Think Outside the Gift Box