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Improved Rotary Engine

Notes on Military and Naval Affairs

Polytechnic Association of the American Institute

Great Candle Manufactory--Description of the Operations

Clothes Wringers--Squeezers

Perry and Onions's Mode of Fagoting Rails

Shot and Guns--Penetration and Construction of War Vessels

Cashmere Shawls--Their Imitation

Classes of Iron-Clad War Vessels

New Cartridges and Shot

Recent American Inventions

Patent Claims

Issued from the United States Patent Office

To Our Readers

Shores's Hand Corn Planter

Hirschbuhl's Ammunition Box for Army Officers


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