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Features

Cutting Sugar Cane-Bagasse Furnaces

Utilizing Steel Grindings

Tomatoes

Salmon Cultivation

Nutritive Qualities of the Onion

Artificial Wood

Williams' Improved Plow

The Coal Trade of the United States

Micro-Photography

Iron Gunpowder

Improved Lounge and Chair

Benefit of Steam Jackets

Schaefer's Pump

Honors to Josiah Wedgewood

Death of Professor Olmsted

American Steamboats in Scotland

Under Brain-Work

Tempering Steel Tools

Inquiry About Gunpowder

Gutta-Percha for Submarine Cables

Charles M. Keller and the American Patent Office

Enlargement of the “Scientific American”

Hobbs' London Lock Factory

Improvements in Fire-Arms

The New Commissioner of Patents

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    Notes and Queries

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May 21, 1859