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Improved Barrel Head-Cutter

Our Special Correspondence

Polytechnic Association of the American Institute

Another Fortunate Inventor

Compression of Steam in Cylinders

Belts for Driving Machinery

Usefulness of Diamonds

Coal Tar on Young Trees

American Clocks and Watches

To Inventors and Patentees - February 4, 1860

Removing Silver from Injured Plated Ware

Gun Cotton

Construction of Roofs

The Great Washington Aqueduct Bridge

Tricks of the Wine Trade

A Wonderful Natural Phenomenon

A Column of Varieties

Improved Planer

New Iron Hoops for Cotton Bales

Patent Extension Cases

The New Canadian Patent Law

Railroad Safety and Brakes

Fire-Bricks

Welding at a Single Blow

Weekly Summary of Inventions - February 4, 1860

Foreign News and Markets - February 4, 1860

New York Markets - February 4, 1860

Patent Claims - February 4, 1860

Hints to our Readers

Improved Compensating Pendulum

Plain Directions for Making a Horizontal Sun-Dial

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    Notes and Queries - February 4, 1860

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February 04, 1860

See the World from a Different Perspective

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