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Babbitt Metal

Improvement in Steam-Engines

Photography and Lithography

Preserving Railroad Timber

A New Aerial Ship

Our Railroads

Steam-Engines for City Railroads

Lever Power in Place of Steam or Water

Magnetism on Railroads

Gould's Improved Window for Submarine Helmets

James' Rifled Cannon and Projectile

Hot-Air Ovens for Iron Furnaces

Improved Hydraulic Motor

Sea-Water and Marine Air

The Heat-Conducting Power of Metals

Tinned and Zinced Tubes

To Chemists--A Desideratum

Straw Braid and Betsy Baker

Pumping Water for Irrigation

The Way German Mechanics Work and Live

The Largest Water-Wheel in the World

Work of Water-Wheels by Night and Day

A Column of Interesting Varieties

Apparatus for Clarifying Cane Juice

The Challenge Cane Crusher

The Great Balloon

The Illinois State Fair

Telegraphic Science

Weekly Summary of Inventions

The Steam Plow Prize

Foreign Summary—Metals and Markets

Patent Claims

Issued From the United States Patent Office

Improved Cast Steel

Quimby's Monitor Clock

Improved Cam Press


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    Notes and Queries

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