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Features

Shoe-Soling Machine

Notes on Military and Naval Affairs

The Geological History of North America

By Stevens

Discussion of the Crank Motion

On the Gyratory Movement of a Liquid Mass

Lead Mines—Process of Smelting

Chemistry of Iron

International Exhibition of Industry and Art

American Saltpeter

Cutting Spiral Moldings

Street and Station Indicator for Railway Cars

Blue Army Cloth

Difficulties in Conducting a Paper—Contributions Wanted

British and American Iron-Clad Ships of War

Fifteen Thousand Patents Secured through our Agency

Vulcanizing India Rubber

New Line of Mammoth Atlantic Steamers

The Patent Law in the Hands of a Cambridge Professor

Patents Claims - November 16, 1861

Issued from the United States Patent Office

Recent American Inventions - November 16, 1861

To Our Readers

Cullingford's Bird Trap

Departments

  • Letters

    Correspondence - November 16, 1861

  • Departments

    Notes and Queries - November 16, 1861

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial