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Improved Portable Stamp Mill, White Maple Sugar, and more

The Most Important American Discoveries and Inventions

Special Notice

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

Are Iron-Clads Indispensable?

Another Step in Educational Reform

The Metropolitan Sanitary Fair

Recent American Patents

The New Steam Revenue Cutters

Facts Concerning the Goodyear Patents

Swindling Mining Companies--Look Out for Them!

The Cost of Coal

Patent Claims

Issued From The United States Patent-Office

Patents Granted for Seventeen Years!

Rates of Advertising

Valuable Work for Inventors Patentees and Manufacturers

The Cheapest Mode of Introducing Inventions

Improved Pantaloons Protector, Improved Knuckle-joint


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April 16, 1864

Of Shamrocks and Science

Happy St. Patrick’s Day