Volume 27, Issue 23
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Features
Italian Industrial Progress
Astronomical Notes
The Fair of the American Institute
Our Five Hundred Thousand Dollar Commissioner to Vienna
A Remarkable Test Plate
Scientific and Mechanical Possibilities
New Plan for a Local Fire Department
Remarkable Magnetic Storms and Auroras in Europe
Scientific and Practical Information
Steam Traction
Improved Steam Engine
Lathe Center Grinder
Transmission of Motion
Inventions and Suggestions for the Prevention of Fires
The Consciousness of Dogs
How Money is Made
Decisions of the Courts
Decisions by the Commissioner of Patents
Answers to Correspondents
Recent American and Foreign Patents
Value of Patents, and How to Obtain them
Practical Hints to Mentors