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Features

The Locomotive of the Future--A Suggestion

Behr on His High-Speed Monorail System

Submarines for the British Navy

Death of Prof. Henry A. Rowland

Death of Richard P. Rothwell

The National Academy of Sciences

By Marcus Benjamin

The Ordnance Board's Test of Thorite

Parsons 1,000-K. W. Turbine and Alternator

How to Make a Gramophone

By Will. B. Stout

A New Weather Cannon

Raising A Submerged Steamship

Army Transport Service in the Philippines--II

An Automatic Boiler-Feeder

An Improved Plow

A Wheat Hospital on Lake Superior

Some New Features in Ant Life

By J. Carter Beard

The Cooper Hewitt Lamp

Business and Personal Wants

Departments

  • Departments

    Recently Patented Inventions - April 27, 1901

  • Index of Inventions - April 27, 1901

  • New Books, Etc. - April 27, 1901

  • Notes and Queries - April 27, 1901

  • Patents - April 27, 1901

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Know Before You Vote