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Features

Goulding's Patent Rock Drill

Moss Paper

To Clean Sponges

A Huge Propeller Screw

Statistics of Cincinnati

American Spiral Bullets in England

List of Patent Claims

Iron Steam Battery

When to Wear India Rubbers

Oil on the New York Central Railroad

Reform in the Patent Laws

Russian Sea Worms

Flour Mills

Pennsylvania Coal

How to Manufacture Saltpeter

The Condensing and Cornish Engine

Black Lead Pencils

Hominy Machines

The New Mechanics' Hall at Worcester

Ship Building in Maine

Rag Cutting Machines

Cause of the Open Polar Sea

Horse Shoes by Machinery

Opposition to Inventions and Discoveries

How Machinery Increases Beneficial Labor

Franklin's Great Discovery

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

Recent Foreign Inventions

Who Was the Inventor of Steam Locomotives?

Expanding Flying Bridge

Life at the Bottom of the Deep Sea

The Right Man for the Right Place

Preparation of Gun Cotton for Collodion

Medals to Scientific Men

Tunnels

The Monster Mortar

Land Anchor for Carriages

Glue Impervious to Water

Improvement in Vises

Departments

  • Letters

    To Correspondents

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