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Lathe for Turning Billiard Balls

Remarks on the Subject of Force in General

By John A. Roebling

Wrought-Iron Guns

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Report of the Committee of the Franklin Institute on Screw Threads

Count Rumford

Cementation of Iron by Carbon from Gas Retorts

Asparagus a Substitute for Coffee

Medals for Inventors in France

Goessling's Corn-Sugar Patents

Allen's Supporter for Fractured Legs

Important English Patent Law Case

The Report on Screw Threads

The Pressure on a Slide Valve

The Field of Invention Inexhaustible

Market for the Month

Recent American Patents

Patent Claims

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Fitzpatrick' Perpetual Time Indicator

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March 04, 1865

See the World from a Different Perspective

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