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Features

The New Post Office, New York City

Mr. Dawson's Idea of Evolution

The Woodbury Patent

Shall We Eat the Horse?

Another View of Mr. Crookes' Last Discovery

The New Department of Aesthetics

Lightning Rods

Explosions in Gunpowder Mills by Electricity

Compresses Steel

Improved Universal Grinder

Practical Mechanism - September 18, 1875

By Joshua Rose

Electrical Speed Recorder

New Locomotive Feed Water Heater

Furnace Working with Petroleum

Swans

Magnetism

Recent American and Foreign Patents - September 18, 1875

Canadian Patents - September 18, 1875

Departments

  • Letters

    Correspondence - September 18, 1875

  • Departments

    Business and Personal - September 18, 1875

  • Notes and Queries - September 18, 1875

  • Index of Inventions - September 18, 1875

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September 18, 1875

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