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Heavy Fly Wheels and Grist Mills

A Good Sign

Discovery in Electricity

Steam Squirrel Hunting

Lake Superior Iron

Recent Patented Improvements

Difference of Sight and Hearing

How to Raise a Fallen Horse

Ventilating Mines

The Patent Office

American Lap-Welded Iron

Rolling Iron and Steel

Improvement in Building Ships

Improvement in the Voltaic Pile

Country Lectures

The Submarine Railway

Cochineal Cultivation in Teneriffe

Congress and the Patent Office Reports

Inspection of Gas

Purifying and Filtering Water

The Onward March


Railroad Management

To Prevent Incrustations in Boilers

Artesian Wells in Illinois


Trial of Fire-Arms

Doctors in Beloochistan

Osage Orange Fences

Feeding Horses

House-Heating Apparatus


Science in Sport


  • Letters

    Correspondents - April 3, 1858

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