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The Menace of the Noiseless Gun

Opportunity for American Steel Construction at Messina

Limitations of the Hydroplane

Aviation in America and the Scientific American Trophy

The Subway Situation



Improved Forms of the Buggy-Type Automobile

The Schneider Torpedo-Launching Station

From the Track-Walker's Standpoint

Accuracy in Scientific Diction

What is the Selden Patent?

By Charles B. Haywood

The Locust Tree: An Important Field for Investigation

First Aid to Those Injured by Electricity

Progress of the 20,000-Ton "North Dakota"

Handy Man's Workshop

An Interesting Experiment and Its Explanation

By Alfred P. Morgan

Forging a Masthead or Boom Ring

By I. G. Bayley

Home-Made Spring Winder

By J. O. Brouillet


  • Departments


  • Notes and Queries

  • Recently Patented Inventions

  • Index of Inventions

  • New Books, Etc.

  • Patents

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March 20, 1909