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Features

Rebel Obstructions in the Neuse River--Plan of the Battle Ground in the Vicinity of Newbern

Notes on Military and Naval Affairs

Polytechnic Association of the American Institute

Surface Condensers for Steam Engines

Ingenious Plan for Corresponding in Cipher

Flax and Cotton Machinery

What Can be Done for Inventors--Advice Gratis and Advice for Pay

Professor Rankine on Steam Expansion and the American Experiments

Steam Engines on Common Roads and for Plowing

The New Cunard Steamer China--American Condensers

Progress of American Inventions Abroad

Patent Claims

Issued from the United States Patent Office

Recent American Inventions

To Our Readers

Improvement in Casting Bronze Ordnance or Other Articles

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April 19, 1862

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