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Improved Combination of Fire Engines with Locomotives

Notes on Military and Naval Affairs

Valuable Receipts

Petroleum--Its Sources--Various Theories

Experiments with Coal Gas

Ventilated Railroad Cars

Irwin's Lamp and Lantern

Manufacture of Damascus Swords

Steam Hammers

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

Our Workshops have Saved the Army

The London Exhibition

Recent American Inventions - July 19, 1862

Patent Claims - July 19, 1862

Issued From the United States Patent Office

To Our Readers


  • Letters

    Correspondence - July 19, 1862

  • Departments

    Notes and Queries - July 19, 1862

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July 19, 1862

The Antidote to Anti-Intellectualism