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Features

Improved Wool Washing Apparatus

Notes on Military and Naval Affairs

Importance of Sleeping With the Mouth Shut

Surface Condensers for Steam Engines

Destructive Fire Shells

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

Water Glass

Why Does Coke Kindle More Quickly Than Anthracite Coal?

Forests on the North Sides of Hills

The Brown Stone of Our Houses Crumbling to Pieces

Type-Setting by Machinery

Value of Inventions in Time of War--What They Have Done for England

Notes on Foreign Inventions and Discoveries

Recent American Inventions

Patent Claims

To Our Readers

Platt and Rosecrans's Star Burner

Kaufman's Home-Made Corn-Broom

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January 11, 1862

Beyond XX and XY

Biology. Identity. Equality.