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Valuable Data for the Aeroplane Builder, Boats for All a Failure, and more

How Inventors Propose to Save Men from Sunken Submarines

Detachable Buoyant Conning Towers and their uses

By Bannerman Phillips

The Wanamaker Transatlantic Flier, Regulations for the Round the World Flight, and more

Our Staff Correspondent at Hammondsport, Glenn Curtiss's Masterpiece in Flying Boats

The Challenger 'Shamrock IV' ' Under Sail

Repair of Los Angeles Aqueduct Siphon, and more

Collapsed by Atmospheric Pressure; Restored by Hydraulic Pressure

By Burt A. Heinly

Science and the Tariff

By E. E. Pickrell

X-Ray Photographs of Flowers

By John W. N. Sullivan


  • Letters

    Correspondence- June 27, 1914

  • Departments

    The Motor-driven Commercial Vehicle- June 27, 1914

  • Recently Patented Inventions- June 27, 1914

  • Index- June 27, 1914

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