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Features

Continuously-Propelled Automobile Trains

By Emile Guarini

The Beginnings of the Incandescent Lamp

By Thomas A. Edison

A Novel Block or Telephone Signal System

Contemporary Electrical Science

An Improved Contact-Maker for Gasoline Engines

Historical Electrical Circuits

Electrically-Registering wind Vane and Anemometer for School Use

By H. W. Harmon

Thermit

Product Replacing Caoutchouc and its Preparation

A Model Parisian Laundry

Water-Resisting Mortar

Chinese Wood Oil

The Naval Battle off Chemulpo

Onyx

Determination of the Total Phosphoric Acid in the Thomas Slag

By C. Aschmann

The use of Light and other Radiations in the Treatment of Disease

The Iron Electric Arc in Phototherapy

A Few Notes on the Steam Turbine

By G. L. Parsons

Skill and Inventive Ability of the Abo Rigines of Southern California

By Elizabeth Mills-Stetson

Unexplored Alaska

Electrical Notes

Excavations in the Orient

Trade Suggestions from United States Consuls

Engineering Notes

Patents!

Departments

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May 14, 1904

Think Outside the Gift Box