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Detecting Poisonous Gases by their Action upon small Animals

Experiments Carried Out by the Bureau of Mines

By George A. Burrell and Frank M. Seibert

The Limiting Size of Steam Turbine Units

In Land Practise the Limit is Fixed by Difficulties of Transportation

Did the Horse Exist in America before this Continent was Discovered by Europeans?

Was Discovered By Europeans?

By E. Trouessart

Hydro-Electric Power for a Southern Industrial Center

A Nine Million Dollar Plant for Chattanooga

The Value of Science

By John W. N. Sullivan

Indian Corn in the Far East

The Hughes Gold Medal of the Royal Society of London

Award to Dr. Alexander Graham Bell

By T. E. James

The Glow of Sulphur

By W. H. Watson

Report on Investigation of Grinding Wheel Protection Devices

Hoods and Flanges

By R. G. Williams

Tracing through Opaque Paper

Dynamo-Electric Lighting for Automobiles

Automatic Control of Output at Varying Speeds of Machine

By Alfred E. Waller

American-Grown Bulbs

Encouraging a Home Industry

By G. E. Mitchell

The Ignition of Wood

New Automatic Fire Alarm

The Instrument Depends on the Use of a Conductor Having a Negative Temperature Coefficient of Resistance

By F. A. FitzGerald

Reflections on Aerial Flight

With a Note on the Fallacy of Pendulum Stabilizers

By H. R. A. Mallock

Monument to Noted Scientist

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    December 20, 1913

    Think Outside the Gift Box