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Adjustable Cane Mill, Reinforcing superanuated Cannon, and more

F. Crace Calvert on Preserving Meat

Polytechnic Association of the American Institute

Age of the Human Race

New Rebel Torpedo

The Tumble in Prices

Native Chicory

Worcester's and Jones's Door Spring

Ill-Regulated Machinery

The Theory of Expansion

Slovenly Workmanship

Peculiarities of the Paddle-Wheel

Patent Claims

Issued from the United States Patent-Office

Recent American Patents


  • Departments


  • Notes and Queries

  • Patents

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October 08, 1864