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A Gross Violation of Principle

The Great Central Railway of England

New York Truant School

Geographical Names as Legitimate Trade Marks

Admiral Colomb on the Spanish War

Testing Acetylene Generators

Insect Migrations

By C. F. Holder

Trick Wood Joining

A Machine for Filtering Liquids

The Multiphone

A Simple Pipe-Hanger

An Improvement in Smoke-Consumers

The Improved Turrets of the Battleship "Texas"

By Robert W. Henderson

Quadruple Compound Harmonic Motion

By M. J. Hoferer

The Late Prof. O. C. Marsh


To Inventors - April 1, 1899


  • Letters

    Correspondence - April 1, 1899

  • Recommended

    New Books, Etc. - April 1, 1899

  • Departments

    Recently Patented Inventions - April 1, 1899

  • Business and Personal - April 1, 1899

  • Notes and Queries - April 1, 1899

  • Index of Inventions - April 1, 1899

  • Patents - April 1, 1899

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April 01, 1899

The Antidote to Anti-Intellectualism