Features
Notes on Military and Naval Affairs
Polytechnic Association of the American Institute
Surface Condensers for Steam Engines
Flax and Cotton Machinery
Professor Rankine on Steam Expansion and the American Experiments
Ingenious Plan for Corresponding in Cipher
What Can be Done for Inventors--Advice Gratis and Advice for Pay
The New Cunard Steamer China--American Condensers
Steam Engines on Common Roads and for Plowing
Progress of American Inventions Abroad
Recent American Inventions
Patent Claims
Issued from the United States Patent Office
To Our Readers
Improvement in Casting Bronze Ordnance or Other Articles
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