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The Last Word in Wireless--The New York Radio Central Station, A Real Start in Aeronautics, and more

Descendants of the Water-Wheel

Installations for Developing Hydroelectric Power upon a Notable Scale

By J. F. Springer

Fifteen Thousand Photographs per Second

By F. Honore

Better Steel Ingots with Less Waste, Chemical Warfare Service School

By A. R. Surface

Lubricating the World

Some Facts That Show Why We Are Short of Lubricating Oil, and a Few Suggested Remedies

By Eben Griffiths

Some Observations on Eggs

Scientific Principles That Enter Where Least Expected and Are Carried Out Unrecognized

By John T. Bartlett

Cutter Versus Sloop

The Past Thirty-Five Years of Racing for the America's Cup

Uncle Samuel's Sweet Tooth

Manufacturing Candy on a Huge Scale to Meet the Demands of the American People

By H. A. Mount

Going to Sea in a Tank

Self-Propelled Models That Make for Better Ships and Less Fuel Consumption

By Robert G. Skerrett


  • Departments

    Correspondence - July 24, 1920

  • Inventions New and Interesting - July 24, 1920

  • Recently Patented Inventions - July 24, 1920

  • Notes and Queries - July 24, 1920

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