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Friction-Iron and Wooden Axles

Improved Water Wheels with Adjustable Buckets

The Strength of Cast-Iron Columns

Our Special Correspondence

Balloons Usefully Applied

The Working of Steam Engines

Sailing of the Arctic Expedition

A Wonderful Cave

"Yellow Jack" Banished from the Crescent City

Volcanoes of the Northwest

"The American Windmill

Physiology of Reproduction


The Safety of Ocean Navigation

What Becomes of the Gold

Thomsons' Improved Finger-Nail Brush

The Great Spike Case

Reform in Weights and Measures

By E. M. Richards

Applications for the Extension of Patents

The Manufacture of Sugar and Gas in Germany

Simple Experiments in Natural Magic

Currant Wine

A Columns of Varieties

Improved Gas Cooking Stove

Improved Locomotive and Car Wheel

Water Gas

The Art of Poisoning

The Age of Invention

Scientific Vs. Practical Instruction


Teaching the Sciences

Recent American Inventions - July 21, 1860


Patent Claims - July 21, 1860

Issued from the United States Patent Office

Useful Hints to our Readers

Money Received

Important to Inventors - July 21, 1860

"The American Pump

A Patent Sad-Iron Heater

New Prospectus

Patent Valve Cock


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    Notes and Queries - July 21, 1860

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July 21, 1860