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The Burnside Rifle, Licensing Engineers

Cheap Oxygen Gas--Light and Heat

Launch of the Iron Battery “Keokuk”

Seventeen Thousand Patents Secured Through Our Agency

Valuable Receipts

Rapid Dry Collodion Photography

An Address on the Patent Laws

The Grape Cure

Steam Plowing in England

Sir David Brewster on the Patent Laws

Hadley's Patent Tap Guide

“Argyllite”--A New Mineral

Now is the Time to Form Clubs

National Workshops

A Few Words to Our Subscribers on the Closing Volume

The Manufacture of Printing Paper

Relief for English Operatives

Order in the Engine-Room

Bring on the Paper Stock!

Recent Foreign Inventions

New Experiments with Guns and Targets

The Drain of Labor

Patent Claims

Issued From The United States Patent Office

Recent American Inventions

To Our Readers

An Effective Rat Trap


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  • Notes and Queries

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December 20, 1862

20% Sitewide for President's Day