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Features

Improvement in Sewing Machines

The War

The New Spanish Rifled Artillery

Information as to the Patentable Novelty of Inventions

Revival of Business

Great Trial of Steam Plows

Telegraphing by Occultation of Lights—Several Claimants for the Discovery

Aluminum Bronze—Brass

Bessemer's Process of Making Steel

The New Spanish Rifled Cannon

Coating the Bottoms of Iron Ships

Information about Hydrophobia

Cocoa Leaves—Their Peculiar Properties

Oxygen Decomposed

Taking of the Popular Loan

Patent Claims - September 14, 1861

Recent American Inventions

Honorable Joseph Holt in New York

Instructions about European Patents

Departments

  • Letters

    Correspondence - September 14, 1861

  • Departments

    Notes and Queries - September 14, 1861

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis