Volume 3, Issue 25new
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Features
Improvement in Canal Locks
Horsemanship
Cause of Boiler Explosions
Their Prevention—Important Information
Atmospheric Circulation and Aepial Navigation
Sulphur Water
Pans for Boiling Maple Sap
Improving the Mississippi-One Hundred Million of Dollars Added to the Value of the State
Licensing for Selling Patent Rights, & C.—Laws of Virginia
Picking Ore by Electro-Magnetism
Stringency in the Money Market
Romance of the Steam Engine
Number II.
Is Hydrogen a Metal?
Sleep
American Engineers' Association
English Rogues and Their New York Brethren
Practical Directions to Engineers
Death of an Inventor
Talk with the Boys
What is Momentum?
Electricity in Woolen Mills
Useful Medical Items
Improved Horse Rake
Spontaneous Generation of Plants and Animals
Van Deusen's Sounding Apparatus
Our Stellar System
Explosive Engines
What Will be the Effect upon Patents in Case of Secession?
What Will Become of the Patent Office if the Union is Dissolved?
To Our Friends
Now is the Time to form Clues
The Patent Office Defended
Reply to “Fair Play”
Patent Laws and the Patent Office
Value of Different Kinds of Fuel
Renewed Activity at the Patent Office
Patent Claims - December 15, 1860
Recent American Inventions
Money Received
Rates of Advertising
Useful Hints to Our Readers
The Rise and Progress of Inventions
Jerrold & Beggs' Steel Springs
Prospectus
Seventeenth Year!!!