Rules for Firing Cannon
The Manufacture of “Greenbacks”
The Metal Magnesium
Mines in Warfare
Economy of Fuel
Concerning Boiler Explosions
The Steam Car on the Second Avenue Railroad
The Currency Question
The Hecker and Waterman Experiments
The New Law for Measuring Ships
Recent American Patents
Patents Granted for Seventeen Years!
Issued From the United States Patent-Office for the Week Ending August 9, 1864.
Notes and Queries