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A New Iron-Clad Turret Ship

Improved Horse Rake, The Atlantic Cable Again

The London Exhibition

Jacobs's Mode of Securing Chimneys to Lamps


A Safe Gunpowder

Petroleum for Fuel

Secretary Welles and Our Iron-Clad Navy

Notes on Military and Naval Affairs


The Patent Law Amendment

Our London Correspondence

Hints to Our Subscribers

What We Ought to do in Relation to Iron-Plated Ships

Patent Law Amendments

Arm the Mississippi Forts

The End of our Volume

Six Good Reasons Why Every Manufacturer, Mechanic, Inventor and Artizan should become a Patron of the Scientific American

Recent American Inventions - June 28, 1862

A Great Silver Ware Manufactory

Patent Claims - June 28, 1862

To Our Friends

To Our Readers


  • Letters

    Correspondence - June 28, 1862

  • Departments

    Index - June 28, 1862

  • Notes and Queries - June 28, 1862

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June 28, 1862

The Antidote to Anti-Intellectualism