Volume 11, Issue 21
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Features
Miscellaneous Summary
Special Notice
India-Rubber Clothes-Wringer
Osborne's Process of Photolithographing
Recent American Patents
Bourne's Heating and Shaving Apparatus
Cornelius and Baker's Electric Bracket
The Avery Engine
Extension of Patents--For Whose Benefit they are Granted
Petroleum
Is Gunpowder Liable to Spontaneous Combustion?
The Citizen's Great Duty
Concerning Valves
Beware of Raw Pork
Blowing Up of the Albemarle.
Expansion of Liquids
Fined For Not Working
Grease Balls
Patent Claims
Issued from the United States Patent-Office for the Week Ending November 8, 1864