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Dr. Normandy's Improved Fresh Water Apparatus

American Basket Willow

The Shipping of the British Empire

Size and Population of the Principal Countries

Shipping of the United States

Rule for Measuring Ships

Area and Population of the British Empire in Detail

An Improved Fishing Rod Wanted

The Force of a Re-Issued Patent

Steel Wire for Telegraphs

Linseed Oils

Journal of Patent Law

Fire-Escape Hook and Ladder Truck

The Japanese Steamer

Check Valves

Water Gas

Historical Society in New Mexico

Heard's Moth Trap

Cooking by the Sun's Rays

By Joseph Henry

The Obstruction to the Navigation of Rivers Caused by the Piers of Bridges

By J. W. Sprague

Engraving on Glass

Polytechnic Association of the American Institute

A Column of Varieties

Improved Gas Apparatus

Warker's Apparatus for Impregnating Liquors with Carbonic Acid Gas

Editorial Correspondence - April 21, 1860

The Growth of Our Shipping

Foreign News and Markets - April 21, 1860

Weekly Summary of Inventions

Industry--Manufactures--Commerce

Patent Claims - April 21, 1860

Issued from the United States Patent Office

The Patent Bill--Morse's Extension Case

A Model Subscriber

Runkel's Oscillating Piston Engine

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    Notes and Queries - April 21, 1860

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April 21, 1860

See the World from a Different Perspective

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