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  • Departments

    High Speed in War Vessels—The "Variag" and the "Viper"

  • The Protection of American Game

  • Operation on the Xiphopages

  • Petroleum Fuel for Warships

  • A Novel Engine for Die-Sinker's Use

  • Electrical Top and Motor

  • Water Measurement and Manipulation in Colorado

  • The Paris Exposition

  • The Ascension of Count Zeppelin's Airship

  • Underground Electric Railway, LondonMethods of Construction

  • The Petrified Forest of Arizona

  • Recent Experiments with the Radiations of Polonium and Radium

  • Index of Inventions

  • To Inventors

  • New Books, Etc.

  • Recently Patented Inventions

  • Notes and Queries

  • Business and Personal

  • Patents

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