Volume 12, Issue 10
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Features
Remarks on the Subject of Force in General
Books and Publications
Wrought-Iron Guns
Report of the Committee of the Franklin Institute on Screw Threads
Count Rumford
Asparagus a Substitute for Coffee
Goessling's Corn-Sugar Patents
Cementation of Iron by Carbon from Gas Retorts
Medals for Inventors in France
Allen's Supporter for Fractured Legs
The Field of Invention Inexhaustible
The Report on Screw Threads
Important English Patent Law Case
The Pressure on a Slide Valve
Recent American Patents
Patent Claims
Issued from the United States Patent-Office