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America and the Gordon Bennett Cup, Good Rails and the Rail Mills and more

New Methods of Measuring Clouds

The Work of Besson at Montsouris Observatory

The World's Production of Gold

By Edward B. Howell

How to Make an Ultra-violet Ray Objective

By G. Michaud and J. F. Tristan

The Nature and Origin of Life

Prof. Schaefer's Inaugural Address of the British Association

Professor Dr. Paul Walden, A 10,000-ton Motor-driven Ship

By George F. Kunz

The Discovery of a New People

Stefansson's Blond Eskimo of Victoria Land

Farm Electric Lighting by Wind Power

A Complete Lighting Plant Installed for $250

By Putnam A. Bates

A New Principal Examiner

Light Trucks with Pneumatic Tires v. Heavier Vehicles with Solid Tires

By G. H. Bryant

Subsidized Motor Trucks

By John R. Eustis

A Jubilee of the Umbrella


  • Letters

    Correspondence - September 28, 1912

  • Departments

    Inventions New and Interesting - September 28, 1912

  • Recently Patented Inventions - September 28, 1912

  • The Motor-driven Commercial Vehicle - September 28, 1912

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