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Submarine Explorer

Great Western Railroad of Canada

Great Railroad Engineering

Pittsburg and her Railroads

Patent Centre-Board

Ohio and Pennsylvania Railroad

Steamboats on the Pacific

New York Exhibition

Recent Foreign Inventions

Prizes Awarded

Petition for Extension of Patent

New Comet

Suspension Bridge in New Brunswick

Decision under the Patent Laws

Discovery of Coal in Oregon

Demonism on Railroads

Boats on the Erie Canal

Coal for Locomotive Engines

Shingle Machine

Colt's Revolver Claimed to be an English Invention

Screw vs. Paddle

Paris Artesian Well

Manufacture of Fire-Arms—Springfield Birmingham


Improved Machine for Cutting Sash and Mouldings

Improvement in Horse Powers

Improvement in the treatment of Calf Skins during the Process of Tanning

Ontario and Huron Railroad

New Electro-Magnetic Engine


Improved Railroad Truck

Improvement in Burglars Alarm

The America

Transfusing of Blood

White's Improved Lathe


Mournful Accident

Improvement in

The Hillotype

To Inventors

Funnels of Steamships Affecting Compasses

List of Patent Claims

Sending Receipts—Postage on Books

Back Numbers and Volumes

An Important Paragraph

Volcanic Eruption in the Sandwich Islands

To Mechanics

On Boilers--No.2

Scientific Memoranda


  • From the Editor

    To Correspondents

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November 29, 1851

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