Volume 7, Issue 3
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Features
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
Six Good Reasons Why Every Manufacturer, Mechanic, Inventor and Artizan Should Become a Patron of the Scientific American
Manufacture of Damascus Swords
Our Workshops have Saved the Army
Steam Hammers
The London Exhibition
Recent American Inventions - July 19, 1862
Patent Claims - July 19, 1862
Issued From the United States Patent Office