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Breaking Ground for the Rapid Transit Tunnel

The Steering of Modern, Screw-Propelled Ships

The Isthmian Canal Survey

The Designs of Last Year's Battleships and Cruisers

Germany's Naval Programme--a Lesson for the United States

Mutual Aid Societies for French School Children

Three Types of Automobiles

The Heavens in April 31, 1900

By Henry Norris Russell

A Cheap Telephone System for Farmers

An Improvement in Smoke Consuming Furnaces

A New Method of Cutting Threads

A Cheap and Efficient Typewriter

The North German Lloyd Liner "Kaiserin Maria Theresia"

A Rein Support and Guard for Horse Harness

American Freight Locomotives and the Engines of the "Oceanic"--A Comparison of Horsepower

The Marine Department of the Trans-Siberian Railroad

By Waldon Fawcett

Prof. Pictet's Experiments with Liquid Air

Some American Mummies

By C. F. Holder


  • Departments

    Correspondence - March 31, 1900

  • Recently Patented Inventions - March 31, 1900

  • Business and Personal - March 31, 1900

  • Index of Inventions - March 31, 1900

  • Notes and Queries - March 31, 1900

  • Patents - March 31, 1900

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March 31, 1900

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