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Hudson River Railroad

Lebanon Valley Railroad

Losing the Trade

Improved Hand Copying Press

Dayton and Springfield, Ohio Railroad

The Central Ohio Railroad

The Virginia Central Railroad

To Cook the Egg Plant

New Steamship

The Late Fair of the American Institute

American Labor and Machinery and Foreign Labor, &C

Family of Patrick Henry

New Jersey Elections and Railroad Monopoly

Booth's Patent for the Reduction of Gold

The Voltaic Battery—Precipitation of Metals


Improved Brick Making Machine

Maryland Institute of Mechanic Arts

Improved Mode of Fastening Scythes in the Snaths

New Printing Machine

Post's Patent Stirrup Iron

Safety Gun Hammer

Stewart's Rotary Engine

To Keep the Dust out of Railroad Cars

A Patentable Subject

Boiler Water Gauge

Coating Iron with Copper

McCallum's Improved Railroad Bridge

Interesting Experiment

Commissioner of Patents' Report

Sulphur and Sulphuric Acid

West India Mail Company

The Britannia Tubular Bridge

Patents Granted—Secret Use

The Iron Trade of England before the Discovery of Coal

List of Patent Claims

Telegraph Patent—Morse's, Bain's, and House's Claims

Patent Claims


Inventors and Manufactures

Cancer Treatment

Scientific Memoranda

Philadelphia Art Union



  • From the Editor

    To Correspondents

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November 16, 1850