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Improved Water Wheel

An English Lard Factory

The Explosion at Erith

Polytechnic Association of the American Institute

Farmers' Club

Fruitless Invention

Explosions--Our Cities in Danger

Definitions of Gears

Birds in Central Park

Galvanizing Iron-a Prize to the Inventor

Trial of the 1,000-Pound Cannon

The Market for the Month

The Great Mechanical Problems of the Day

Revolving Turrets or Broadside Ships?

Man Traps and Spring Guns

Patent Claims

Issued From the United States Patent-Office for the Week Ending October 25, 1864

Recent American Patents

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November 05, 1864

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