Improved Combination of Fire Engines with Locomotives

Notes on Military and Naval Affairs

Petroleum--Its Sources--Various Theories

Valuable Receipts

Experiments with Coal Gas

Irwin's Lamp and Lantern

Ventilated Railroad Cars

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

Steam Hammers

Our Workshops have Saved the Army

Manufacture of Damascus Swords

The London Exhibition

Recent American Inventions - July 19, 1862

Patent Claims - July 19, 1862

Issued From the United States Patent Office

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