Volume 13, Issue 25
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Features
Polytechnic Association of the American Institute
The Foot Lathe
Recent American Patents
Patent-Office Decisions
Porcelain Pictures
Another Trial in Working Steam
Report of the Secretary of the Treasury
Report of the Secretary of War
Report of the Secretary of the Navy
Pneumatic Dispatch
Experiments in Burning Water
Boiler Explosions
Boiler Explosions from Explosive Gases
Rimmers
Patent Claims
Issued from the U. S. Patent Office