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Improved Breech-Loading Cannon

Inventions and Discoveries Abroad

Miscellaneous Summary

Scientific Information--British Association for the Advancement Of Science

The Great Works of the Period

The Indian Summer

Tramping Mechanics

The New Postal Currency

Packing the Ends of Condenser Tubes

Concerning Safety Valves

An Astronomer on Boiler Explosions

The Supply of Petroleum

Don't Stand Idle

An Impenetrable Armor Ship

Prevention of Decay in Wooden and Iron Ships

Harbor Defenses

Recent American Patents

Patent Claims

Issued from the United States Patent-Office

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    Notes and Queries

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October 31, 1863

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