Features
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
Reynold's Bobbin
Departments
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Correspondence
Notes and Queries
