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Features

Improvement in Windlasses

List of Patent Claims

Scientific Notes

Discovery of a Dangerous Reef

The Weight of Castings by Patterns

Recent Foreign Patent Law Cases

Oil Used on Railroads

History of the Telegraph Difficulties and Success of an Inventor

Encroachments on the Patent Office

Types of Hard Metal

New Air Spring for Railroad Car

Improvement in Windmills

War Projectiles-New Shells and Cannon

The United States Patent Office

The Scientific American Prizes

The Plague; Its Origin and Disappearance

Splendid Cash Prizes

Physical Effects of a Bombardment

Iron Girders

Engineer and Machinists Drawing Book

A Word to Old and New Friends

American Association for the Advancement of Science.--No. 5

Railroad Accidents in England

Lighting Streets by Electricity

Improvement in Government Firearms

A Novel Experiment in Locomotives

Lime and Its Use in Cities

Making a Sea of the Arabian Desert

Mechanics

Inventors and Manufacturers

To Prepare Nitrate Ammonia

Departments

  • Letters

    To Correspondents

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September 29, 1855

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