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A Problem in Ship Propulsion

To Inventors


  • Departments

    Changes in the Assistant Commissionership

  • Obstacles to the Proposed Erie Canal Improvement

  • Automobilism in the German Postal Service

  • The Work of the Division of Entomology

  • Death of Prof. Pepper

  • Our Exports of Iron and Steel

  • The Patent Office Exhibit at the Paris Exposition

  • M. Trillot on Color Photography

  • Some Chinese Vegetables

  • A Non-Refillable Bottle

  • A Perfected Burner for Incandescent Mantles

  • A Rope Armored Engine

  • The Asbestos Mines at Thetford, Canada

  • Correspondence

  • The Expiration of the Edison American Three-Wire Patent

  • Ferry Steamer with an Elevating Deck

  • The Black-Wall Tunnel, London

  • The Cullen Ball-Bearing Rifled Gun

  • A French Trolley Automobile

  • Notes and Queries

  • Index of Inventions

  • Recently Patented Inventions

  • Business and Personal

  • Patents

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