Volume 11, Issue 2
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Features
Baron Von Lenk's Gun-Cotton Patented in this Country
Petroleum for Generating Steam
Ice-Period in America
A Steam Engine for Thirty-One Cents
Boring Tools
Number I
Torpedoes Used by the Rebels
Miscellaneous Summary
Recent American Patents
Special Notices
Sighting Field Guns
Lewis's Oscillating Churn
Paper from Corn Husks
The Hecker and Waterman Experiments
Charles Wye Williams on Heat and Steam
The Government Steam Experiments
Metal-Working
New York Markets
Patents Claims
Issued from the United States Patent-Office