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Improved Patent Horse Rake, The Broom Business, and More

Manufacture of Elastic Toys

Valuable Receipts

What May Be Seen at the Atlantic Docks

The Science of Steam Engineering

The New Atlantic Telegraph

The Safety Valve

An Important Crisis in the History of Newspaper Publishing

Slackness at the Patent Office

The Continental Telegraph

General Mitchell


Improved Tools

Patent Business in 1880 and 1862

Recent American Inventions

Recent Foreign Inventions

Patent Claims

To Our Readers

Brown's Patent Automatic Letter-Box


  • Departments


  • Notes and Queries

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November 22, 1862

Of Shamrocks and Science

Happy St. Patrick’s Day