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Improvement in Canal Locks

The Two Principal Rules in Horse Back Riding

Atmospheric Circulation and Aepial Navigation

Sulphur Water

Cause of Boiler Explosions

Their Prevention—Important Information

Licensing for Selling Patent Rights, & C.—Laws of Virginia

Picking Ore by Electro-Magnetism

Improving the Mississippi-One Hundred Million of Dollars Added to the Value of the State

Pans for Boiling Maple Sap

Stringency in the Money Market

Romance of the Steam Engine

Number II.

Is Hydrogen a Metal?


American Engineers' Association

Talk with the Boys

Death of an Inventor

Practical Directions to Engineers

English Rogues and Their New York Brethren

What is Momentum?

Useful Medical Items

Electricity in Woolen Mills

Improved Horse Rake

Van Deusen's Sounding Apparatus

Spontaneous Generation of Plants and Animals

To Our Friends

Now is the Time to form Clues

What Will be the Effect upon Patents in Case of Secession?

Our Stellar System

What Will Become of the Patent Office if the Union is Dissolved?

Explosive Engines

Patent Laws and the Patent Office

Reply to “Fair Play”

The Patent Office Defended

Renewed Activity at the Patent Office

Value of Different Kinds of Fuel

Recent American Inventions

Patent Claims - December 15, 1860

Money Received

Useful Hints to Our Readers

Rates of Advertising


Seventeenth Year!!!

The Rise and Progress of Inventions

A Universal Language

Jerrold & Beggs' Steel Springs


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    New Books and Periodicals Received

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    Notes and Queries - December 15, 1860

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