Features
Notes on Military and Naval Affairs
United States Circuit Court--New Jersey
Ordnance and Gunnery
The Colors of Coal Tar
The Discoveries of 1861
Sewing Machine Improvements
Beet-Root Cultivation and Sugar
Paraffine
Good Inventions Lost to the Country--Importance of Encouraging Inventors--What Congress Should Do
Extension of Patents--For Whose Benefit They Are Granted
Cast-Iron Moldings
Operations at the Brooklyn Navy Yard
Clothes Wringers
British Patent Law Reform
New-York Railways
Recent Foreign Inventions and Discoveries
Patent Claims
Recent American Inventions
To Our Readers
Departments
Submarine Guns
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Correspondence
Notes and Queries
