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Railroad Law in Ohio

To Dye Hair Black Instantaneously

German Railroads

Gregory's Engine Power-Regulator

Reflection of Light and Sound

Foreign Correspondence

How We Pay for Tea

Metallic Life Boats

A Golden Model

Professor Jacobi

Steam Job Printing

Compact Mortising Machine

Expense not Spared

Improvement in Forge Fires

Mineral Naptha

California Fifty Dollar Gold Piece

Steamboat Challenge

The Three Cent Coins

Earthenware Pipes and Machinery

Patent Cases

A Curious Rudder—Necessity the Mother of Invention

Gas Light

List of Patent Claims

New Edition of the Patent Laws

To Remove Paint from Clothes

Scientific Memoranda



George Hudson the Railway King


  • From the Editor

    To Correspondents

  • Letters

    Paragraph to Editors and Publishers

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April 19, 1851