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    Features

    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

    Engineering

    Science

    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

    • Departments

      Correspondence

    • Notes and Queries

    • Recently Patented Inventions

    • Index of Inventions

    • New Books, Etc.

    • Patents

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    March 20, 1909

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