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Features

The Elizabeth Bridge, Buda-Pest

Coal Cutting by Electricity

Contemporary Electrical Science

The Transmission of Electric Energy without Wires

By Nikola Tesla

Stereoscopic Projections

Curious Optical Illusions

Comparative Fighting Values of Modern Warships

By Otto Kretsoumek

The Protective Resemblance of Insects

By Percy Collins

The Practical Benefit of Hydrographic Records

The Life of a Forest

By Gifford Pinchot

Aquatic Furs used by Hatters

By Charles H. Stevenson

Norwegian Cod Liver Oil

Electrical Methods of Measuring Temperature

The Compressed-Air Power Plant at the St. Louis Exposition

A Huge Duplex Lathe

Production of Oxygen and Vitalized Air

Electrical Notes

Engineering Notes

General Results Achieved by the Geological Survey in Twenty-Five Years

Trade Suggestions from United States Consuls

Patents!

Science Notes

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    June 04, 1904

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