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Improved Coasting Sled, Checking Perspiration and More

Rules for Firing Cannon

The Manufacture of “Greenbacks”


Photographic Items

The Metal Magnesium

Economy of Fuel

The Steam Car on the Second Avenue Railroad

Mines in Warfare

The Currency Question

Concerning Boiler Explosions

The New Law for Measuring Ships

The Hecker and Waterman Experiments

Recent American Patents

Patents Granted for Seventeen Years!

Issued From the United States Patent-Office for the Week Ending August 9, 1864.


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