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The Waste of Our Natural Resources

Fewer Broken Rails

A New Fire-Alarm System for New York

Science

Electricity

Belin's Improved Apparatus for the Electrical Transmission of Pictures

By Jacques Boyer

Is the Earth's Shape Changing

By J. F Springer

Impressions of American Inventors.--II

Experiments with Hydroplanes or Skimmers

By the English Correspondent of the Scientific American

Artificial Rubies

By Victor Barton

An Automobile Trolley-Repair Truck

By Alfred Gradenwitz

A Simple Medical Coil

By Frederick E. Ward

Handy Man's Workshop

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June 12, 1909

See the World from a Different Perspective

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