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A Century of Progress in the United States

By Edward W. Byrn

Ritchie's Telautograph

Some Automobiles Exhibited at the Paris Exposition

A Rapid Method of Vulcanizing Rubber

Unites States Naval Proving Ground, Indian Head

By Jos. Strauss

The Halford Gradient Railway

Logging in the Northwest

By D. A. Willey

VI. A Metallic Thermometer

By George M. Hopkins

Some Curious Sculpins

By Charles Frederick Holder

Some Recently Patented Novelties

To Inventors


  • Departments

    New Books, Etc. - December 29, 1900

  • Recently Patented Intentions - December 29, 1900

  • Notes and Queries - December 29, 1900

  • Business and Personal - December 29, 1900

  • Index of Inventions - December 29, 1900

  • Patents - December 29, 1900

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