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Electric Equipment of a Great Railroad

The Development of Aerial Navigation for Military Purposes in Europe

International Protection of Niagara Falls

The English Channel Tunnel

Uniformity in Battleships

Mosquito Extermination

Canals and Railways in India

By L. H. Yates

The Bell Tetrahedral Kite in Wireless Telegraphy

Armor Plate--The Last Answer of the Banker to the Burglar

An Improved form of Automatic Carbureter

The Overflow of the Colorado River and the Salton Sea--II

By George Wharton James

Vesuvius: Past and Present

Business and Personal Wants


  • Departments


  • Recently Patented Inventions

  • Index of Inventions

  • Patents

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