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Features

Improved Shingle and Heading Machinery

Photo-Mechanical Printing

The Money Value of Education

Improvements at the Mouth of the Mississippi

What is the Cause of Tides?

Motion on a Moving Body

A Curious Ocular Illusion

Stockley's Improved Anti-Primer

Smith's Improved Whiffletree Hook

A New Locking Bolt

Whipple's Improved Clothes Dryer

Improved Electric Lamp Lighter

Practical Mechanism

By Joshua Rose

Improved Rotary Pump

Movable Fronts for Buildings

Growing Orchids

The Solanum Crinitum

Car and Carriage Springs

Recent American and Foreign Patents - May 1, 1875

Communications Received - May 1, 1875

Departments

  • Letters

    Correspondence - May 1, 1875

  • Recommended

    New Books and Publications - May 1, 1875

  • Departments

    Business and Personal - May 1, 1875

  • Notes and Queries - May 1, 1875

  • Index of Inventions - May 1, 1875

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May 01, 1875