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Speed Indicators on Locomotives

Single-Service Paper Milk Bottles

Running Municipal Trolley Cars with Garbage and Refuse

Slaughter in War and Peace

Domestic Electric Light Plant Driven by a Windmill

The Brennan Gyroscope Monorail

To the Jamestown Exposition by Motor Boat

By George Ethelbert Walsh

Our 735,000,000-Bushel Wheat Crop

Some Unknown American Natural Bridges

By T. S. Parsons

A Home-Made Barometer

By S. Leonard Bastin

The Wonderful Sulphur Mines of Louisiana


  • Departments

    The Heavens in June

  • Correspondence

  • Recently Patented Inventions

  • New Books, Etc.

  • Notes and Queries

  • Index of Inventions

  • Patents

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