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Moss Paper

Goulding's Patent Rock Drill

American Spiral Bullets in England

A Huge Propeller Screw

To Clean Sponges

Statistics of Cincinnati

List of Patent Claims

Oil on the New York Central Railroad

Iron Steam Battery

How to Manufacture Saltpeter

Flour Mills

When to Wear India Rubbers

The Condensing and Cornish Engine

Russian Sea Worms

Reform in the Patent Laws

Pennsylvania Coal

Rag Cutting Machines

Hominy Machines

Black Lead Pencils

The New Mechanics' Hall at Worcester

Ship Building in Maine

Manufacture of Iron--Hot Blast; Saving of the Waste Gases

How Machinery Increases Beneficial Labor

Horse Shoes by Machinery

Franklin's Great Discovery

Cause of the Open Polar Sea

Opposition to Inventions and Discoveries

Preparation of Gun Cotton for Collodion

Medals to Scientific Men

Life at the Bottom of the Deep Sea

Expanding Flying Bridge

Who Was the Inventor of Steam Locomotives?


The Right Man for the Right Place

Recent Foreign Inventions

The Monster Mortar

Glue Impervious to Water

Improvement in Vises

Land Anchor for Carriages


  • Letters

    To Correspondents

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December 29, 1855