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Features

Automatic Rake for Harvesters

Armstrong Guns and Iron-Clad Ships Again --Ironsides Invulnerable

Fatal Explosion of Gun Cotton--Death of a Promising Young Chemist

The London Exhibition

Polytechnic Association of the American Institute

Vanderbilt's Polishing Belt

Experiments with a Submarine Cannon

Locomotive Business in Paterson--a New Dummy Engine

Six Good Reasons Why Every Manufacturer, Mechanic, Inventor and Artizan Should Become a Patron of the Scientific American

California State Agricultural Society

The New Amendments to the Patent Laws

Patent Law Amendments

Recent American Inventions - July 5, 1862

Patent Claims

Issued From The United States Patent Office

To Our Readers

Departments

  • Letters

    Correspondence - July 5, 1862

  • Departments

    Notes and Queries - July 5, 1862

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