Features
Section Seven of the Amendments to the Patent Statutes
Diphtheria in Cold and Hot Countries
The "Rotary" Steam Engine
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
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
