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Retrospect of the Year 1912

A Parcels Post Tunnel Railway

Transporting Mail Automatically by a New System

Scientific Management for Scientists

"The Bridge." The Trust Idea Applied to Intellectual Production

By Wilhelm Ostwald

The Military Supremacy of the Air-II

By Theodore M. R. von Kler

The Modern Automobile Torpedo

The Story of a Great Invention

By Robert G. Skerrett

To Fill a Barometer Tube

By Henry H. Riggs

How to Remove Black Paper Strips from a Film Back

By Stanley P. McMinn

An Electrical Method for Glass Cutting

By Philip Edelman

An Interesting Static Electric Motor

By H. B. Dailey

Power of a Microscope

By C. W. Nieman

Progress of the Weather Bureau, The Respiration Calorimeter and more

Facing The Future Fearlessly

By Franklin O. King


  • Recommended

    New Books, Etc. - January 4, 1913

  • Departments

    Inventions New and Interesting - January 4, 1913

  • Recently Patented Inventions - January 4, 1913

  • Notes and Queries - January 4, 1913

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