Volume 10, Issue 19
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Features
Iron-Clads at Home and Abroad
Alexandre Vattemare
The Most Important American Discoveries and Inventions
Thomson's Combined Barometer and Thermometer
Cast-Steel Ordnance
The Chenango Boiler Explosion
The Close of the Metropolitan Fair
Special Notice
Recent American Patents
Improved Horoscope
Richards' Try-Square
Congressional Interference with Patents
Death of General Totten
Co-Operative Societies
What Hungry Men Eat
Machinists and the Sanitary Commission
Patent Claims
Issued From The United States Patent-Office