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Features

Hughes' Atmospheric Trip Hammer

Improvement in Propellers

Brick Machines

Gun Cotton for Cannon

Indigestibility of Soup

California Academy of Natural Science

All Fools not Dead Yet

Is Medicine a Science

American Clippers in England

American Progress in Manufacture

The Flying Ship

Magnetic Observatory

Railroad Collisions

British Association for the Advancement of Science—No. 3

Carving Machine

Oval Turning Lathe

Fork Bending Machine

The Crystal Palace

Grinding Circular Saws

Machine for Filing Saws

Valve Gear for Locomotives

Hanging Saws

Iron Shutters

New Railroad Brake

The Coal Industry of the United States

India Rubber for Ever

War, and Its Effects upon Mechanics and Inventors

Steam Harmonicon

Alarm Whistle at Sea

The Art of Dyeing and Coloring

List of Patent Claims

Patents in Canada

More Life Boats

The Telegraph in Australia

The Wood Gas Controversy

Important Items

Palm Oil Candles

Tubular Bridges in Canada

The Rubber Trade

History of Reaping Machine—No. 7

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