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“House Fly” Should be Called “Typhoid Fly”

The Truth About the German “Dreadnoughts”

Reducing the Noise of Elevated Roads




A New Class of Submarines for the United States Navy

The Amphibicycle

By the Paris Correspondent of the Scientific American

The New Croton Falls Reservoir

Submarine Wrecking Vessel

Steering of Ships

Tricks with Soap Bubbles

By Percy Collins

The Great Ice Jam at Niagara

By F. C. Perkins


  • Departments

    Correspondence - May 1, 1909

  • The Heavens in May

  • Index of Inventions - May 1, 1909

  • Patents - May 1, 1909

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May 01, 1909