The Most Important American Discoveries and Inventions
Activity of the Machine-Shops
How to Lay up an Eight-Strand Gasket
Polytechnic Association of the American Institute
Ornamental Steam Engines
Welding Steel Cold
Another Step in Educational Reform
The Metropolitan Sanitary Fair
Are Iron-Clads Indispensable?
Facts Concerning the Goodyear Patents
The New Steam Revenue Cutters
The Cost of Coal
Swindling Mining Companies--Look Out for Them!
Recent American Patents
Issued From The United States Patent-Office
Patents Granted for Seventeen Years!
Rates of Advertising
The Cheapest Mode of Introducing Inventions
Valuable Work for Inventors Patentees and Manufacturers
Improved Pantaloons Protector, Improved Knuckle-joint
Notes and Queries