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The American Association at Madison, Wis

By H. C. Hovey

Patent Office Examiners Wanted

The "Lunken" Gate Valve

A Light Reflecting Apparatus

Bevel Gearing Cut Theoretically Correct

Condensed Milk Represented at the Fair

Exhibit of the Dixon Crucible Company at the Fair

Cable Railway Accidents

Suggestions in Optics

By M. Hopking

The Great German Search Lights at the World's Columbian Exposition

The World's Columbian Exposition--State Buildings

Notes from the Worlds Columbian Exposition Chicago 1893

The New U. S. S. Detroit

To Inventors


  • Departments

    Business and Personal

  • Notes and Queries

  • Recently Patented Inventions

  • Index of Inventions

  • New Books and Publications

  • Patents!

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September 02, 1893

Science for the Modern World