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Features

Gigantic Revolving Cannon, American Shells for Guns and more

Change of Mail Day

The War

Death of Senator Douglas

Absurdity of Steam and Centrifugal Guns

Six Good Reasons Why Every Manufacturer, Mechanic, Inventor and Artizan should become a Patron of the Scientific American

Confusion at the Patent Office

Inspectors of Supplies

Battery of Whitworth Cannon Arrived

High Pressure Steam in Condensing Engines

Wooden-Soled Shoes for Soldiers

The New Major-Generals

Patent Claims - June 15, 1861

Ingersoll's Mechanical Hair Brush

Departments

  • Letters

    Correspondence - June 15, 1861

  • Departments

    Notes and Queries - June 15, 1861

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