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Features

Section Seven of the Amendments to the Patent Statutes

The Underground Trolley in New York City

Diphtheria in Cold and Hot Countries

The "Rotary" Steam Engine

By R. H. Thurston

A New Automatic Screw Cutting Die Head

The Manufacture of Ready Mixed Paints

An Improved Boiler

Scenes on the Columbia River, Oregon

The Bertillon System of Identification by Measurement

A New Fast Job Printing Press

The Glaciers of Greenland

By Ralph S. Tarr

A Fire Escape and Water Tower

Batchelor's Ripping Attachment for Sewing Machines

To Inventors - April 3, 1897

Departments

  • Recommended

    New Books, Etc - April 3, 1897

  • Departments

    Recently Patented Inventions - April 3, 1897

  • Business and Personal - April 3, 1897

  • Index of Inventions - April 3, 1897

  • Notes and Queries - April 3, 1897

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April 03, 1897