Volume 3, Issue 20
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Features
Science Made Popular
Professor Faraday's Lectures on the Physical Forces Lecture IV.--Chemical Affinity--Heat.
Theoretical Economy of the Air Engine
To Make Steel from Pig Iron
American Naval Architecture
The Steamer Hankow
Weston's Improvement in Hanging Saws
Davidson's Boat-Lowering Apparatus
Pease's Improved Oils
Oil Lamp Prizes
Recent American Inventions - November 10, 1860
Tungsten
The Polytechnic Association of the American Institute
American Railroad Builders in Brazil
Glutine--Important Manufacture
Hydraulic Association-Water Wheel Experiments
Improved Box-Making Machinery
Fogg's Improved Skate
Water Gas
The Manufacture of Steel
New Order of Things at the Patent Office
Illustrations of the Patent Office Reports
Boiler Explosions--Facts Wanted
Patent Office Decisions
Report on the Water Gas
Useful Medical Hints
The Highest Buildings in the World
How Much Pork Will a Bushel of Corn Make?
Applications for the Extension of Patents
Patent Claims
Issued From The United States Patent Office For The Week Ending October 30, 1860