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American Rapid Transit in London

Flies as Carriers of Bacteria

The Artistic Element in Bridge Design

British Workmen on American Industry

The New Cunarders

Electric Power Plant Below Mount Rainier

By Earl Mayo

Carrier Pigeons for the German Navy

An Electric Ore-Reducing Apparatus

A New Soda-Water Machine

Motor Coaches for British Railroads

A Simple Kerosene Engine

The Coal Industry of Pennsylvania

By W. Frank M'clure

Wireless Telephonic Communication between Moving Ferry Boats

By T. Byard Collins

A Land Boat for Armory Use

Guilleminot High-Tension and High-Frequency Coils

By Emile Guarini

Gage for Railway Car Axles

Heater Attachment for Lamps and Gas Burners

Useful Attachment for Rain-Water Leaders

Adjustable Cultivator

Rail Connection

Centrifugal Separator

Business and Personal Wants

Popular Steam Traps


  • Departments

    Science Notes - May 23, 1903

  • Recently Patented Inventions - May 23, 1903

  • Notes and Queries - May 23, 1903

  • New Books, Etc. - May 23, 1903

  • Index of Inventions - May 23, 1903

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