Skip to main content


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

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
April 03, 1897

Of Shamrocks and Science

Happy St. Patrick’s Day