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To Find the Tonnage of Ships

New York and Erie Railroad

Sweet's Patent Excavating Scraper

Cheap Railway Fares in England


Rats for the Table

Quadrature of the Circle

History and Construction of the Thermometer

The Present Cotton Crop

The Floods of 1850

List of Patent Claims

Magnetic Principles of the Solar System or Deductions from Experiments with the Solar Magnetic Engine and previously known Astronomical Truths

India Rubber Flute

Improvement on Steam Engines

Tapestry Velvet and Other Carpets

The Bakatlas of South Africa

The Largest Grape-vine in The United States

Crank and Pully

Improved Machinery for Grinding Spiral Knives

Variations of the Compass

To Inventors and Patentees

The Electric Telegraph in Europe

Sticking, or Court Plaster

Scientific and Mechanical Information

Improvements in Carding

London Industrial Exhibition


To Our Subscribers—The End of the Volume

To Our Contemporaries

The Great State Fair


Patent Claims

Scientific American for Binding

Important Notice to us

Answers to Correspondents


  • From the Editor

    To Correspondents

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September 14, 1850

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