Volume 14, Issue 32
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Features
Our Patent Agency Department
Extension of Patents--Important to the Inventors of 1845
Stubborn Facts
Interesting Items of Useful Information about Patents and Patent Law Cases
The Patent Agency Business
To Patent Agents and Lawyers
The American Patent Office
Description of the New Offices of the Scientific American
Sensation of Heat from Carbonic Acid
An Atmospheric Dryer
Extracting the Metal Aluminum
Glazed Waterproof Cloth
Franklinite Iron Ores and Sulphur
Photographing on Wood
Rendering Textile Fabrics Waterproof
Concrete Houses
Observations on the Connection of the Elements by their Atomic Weights
By Septimus Piesse, of London, England
A True Sign of Progress
Scientific Farming Memoranda
Tunneling Mountains
Prevention of Fire on Board of Ships
To Patentees
A Gentle Hint to Postmasters
Water-Wheels by Night and Day
Ultimate Value of Patents
The Mystery of the Lakes
Saw-Mills without Balance Wheels
Canadian Patent Laws
Improvement in Power Looms
Variable Cut-Off Gear
Great Volcanic Eruption
Improved Shingle Machine
Mechanics
Inventors, Millwrights, Farmers and Manufacture