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New System of Deodorizing Petroleum

Polytechnic Association of the American Institute

Recent American Patents

The Foot Lathe

Patent-Office Decisions

Another Trial in Working Steam

Porcelain Pictures

Report of the Secretary of War

Report of the Secretary of the Treasury

Report of the Secretary of the Navy

Pneumatic Dispatch


Experiments in Burning Water

Boiler Explosions from Explosive Gases

Boiler Explosions

Patent Claims

Issued from the U. S. Patent Office


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December 16, 1865

Confronting Common Wisdom