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Features

Important Discussion on the Air Engine

The Chemical History of a Candle

Romance of The Steam Engine

An Historical Sketch of Air Engine From the Year 1700

Use and Abuse of the Eyesight

Column of Varieties

The New Patent Law

Encyclopdias and Explosions

Bank Capital Consists of Merchandise

The Lumber Trade—Sawing Operations

The Polytechnic Association of the American Institute

Patent Claims - April 6, 1861

Rates of Advertising

Change in the Patent Laws

Naylor & Co.'s Cast Steel Bells

Prospectus of the Scientiflc American

Departments

  • Letters

    Correspondence - April 6, 1861

  • Departments

    Notes and Queries - April 6, 1861

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Science or SciFi?

Science or SciFi?

Vanishing Particles. Spooky Action.