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Preparation of Ditto Practised by Water Gilders

Improved Cultivator

Hydrogen a Metal

Water Gas for Lighting and Heating

The Panama Railroad

Silvering Clock Faces, Barometer Plates, &c

Silvering Plates for the Daguerreotype

Amalgam of Gold or Silver

Publishers and Editors

Verdict of the Coroner's Jury about the Fallen Buildings

Expose of Paine's Light

Reform of the Patent Laws—Washington Republic

Look out for Impostors

California Agency

The World's Fair

The Human Ear

Taciturnity of Genius

Patent Cases

Air Locomotives again

New Wingless Bird

French Statistics

Can Flax be Employed as a Substitute for Cotton

The Age of Gold


Basaltic Columns

Our Navigation

A Remington Bridge Fallen

History and Description of the U.S. Patent Office Buildings

Shanghai and the Chinese

Belts and Pulleys

Mechanical Principles—No. 5

List of Patent Claims

Fast Sailing Ships

English Patents to Americans

Patent Claims

Smoky Chimneys and Fire-Places

To Dye Ivory




Inventors and Manufacturers


  • From the Editor

    To Correspondents

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February 01, 1851

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