Improved Drilling Machine, Carbonization of Illuminating Gas

Donald Mckay's Defense of the Navy

Improvement in Photography

The Geology of Petroleum

The Engines of the “Dictator”

Interesting English Patents

Recent American Patents

The “Union” Lamp

Fine Tools

War a Stimulant to Invention

Light Wanted

Extension of Patents--For Whose Benefit they are Granted

Location of Steam Gages and Indicators

Making Sirup from Corn

New Books and Publications

Second Trial of the 1,000-Pounder

Purifying Gas by Oxide of Iron

The Rocks in Which Petroleum is Found

A New Electric Annunciator

Patent Claims

Issued From The United States for the week ending November 1, 1864 Reported official for the scientific American

To Our Readers

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