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The True Role of Water Power, Repairing the Propeller of a Destroyer and more

By C. D. Wagoner

The Problems of Electrification

The Struggle Toward a Standard, and What Is Likely to Come of It

By Robert G. Skerrett

Setting Federal Wheat Standards, Nickel Babbitt

By George H. Dacy

California's Seaweed Industry

By John L. Von Blon

Edison's Views on Life and Death

An Interview with the Famous Inventor Regarding His Attempt to Communicate with the Next World

By Austin C. Lescarboura

Revising High Bridge

Five Alternative Official Plans for Doing Away with the Piers that Obstruct Navigation

By W. B. West

Getting a Line on Concrete Pipe

By S. R. Winters

The Architecture of the Concrete Chimney

By G. Orb

Hardening Steel in Gas Fired Furnaces

Some Interesting Details of One of the Leading Modern Heat-Treating Processes

By W. A. Ehlers

The Last Race for the Gordon Bennett Cup

By John Jay Ide

Do Moths use "Wireless"?


  • Departments


  • The Heavens in November, 1920

  • Inventions New and Interesting

  • Recently Patented Inventions

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