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The Underground Trolley in New York City

Section Seven of the Amendments to the Patent Statutes

Diphtheria in Cold and Hot Countries

The "Rotary" Steam Engine

By R. H. Thurston

A New Automatic Screw Cutting Die Head

An Improved Boiler

The Manufacture of Ready Mixed Paints

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


  • 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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