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Opening Up the Harlem River, Determining Carbon in Steel by Electric Resistance and more

Famous New York Waterway to be Relieved of Obstructions and Deepened to 14 Feet

The World's Greatest Vehicular Tunnel

Some Constructional Features of the New York-New Jersey Project

By Robert G. Skerrett

The Langmuir Condensation Pump

By L. A. Hawkins

Bringing the X-Ray to the Patient, Light-Filters for Observing Pilot Balloons

By Ralph Howard

A Forward Step in Automotive Fuels

A Manufactured Fluid With Alcohol Base That Gives Better Engine Performance Than Gasoline

A Telephone to Europe?

What General Squier Has Done by Way of Utilizing Bare Wire Even in Water

By C. H. Claudy

The Tools of Science

John A. Brashear--A Great Instrument-Maker and Astronomer

By Herbert T. Wade

Harnessing Our Waterpower

Why We Should Make the Most of Such Resources Within Our Boundaries

By S. G. Roberts

Succeeding in Mining Engineering

A Survey of the Training for and Opportunities in This Profession

By Raymond Francis Yates

Watering Idaho's Desert

A Hundred-Million-Dollar Project Involving two and One-Half Million Acres

By J. F. Springer


  • Departments

    The Heavens in May, 1920

  • Inventions New and Interesting - May 8, 1920

  • Recently Patented Inventions - May 8, 1920

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