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Features

Patent Universal Jointer

Water as Fuel

How to Treat Fruit Trees

The Horse in Market

Everybody's Centennial

Steep Gradients

Coffee Grounds

The American Museum of Natural History

A New Domestic Steam Engine

Dr. Marey's Chronograph

May's Patent Butter Worker

Practical Mechanism - June 20, 1874

Number II. Side Rake

By Joshua Rose

Improved Punch and Screwdriver

Improved Hammer

Remarkable Balloon Ascent

A Microscopic Aquarium

Decisions of the Courts - June 20, 1874

United States Cireuit Court-District of Massaehusetts

Recent American and Foreign Patents - June 20, 1874

Answers Correspondents - June 20, 1874

Communications Received - June 20, 1874

Canadian Patents - June 20, 1874

List of Patents Granted in Canada May 19 to May 28 1874

Departments

  • Letters

    Correspondence - June 20, 1874

  • Recommended

    New Books and Publications - June 20, 1874

  • Departments

    Business and Personal - June 20, 1874

  • Index of Inventions - June 20, 1874

  • Patents - June 20, 1874

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June 20, 1874

Beyond XX and XY

Biology. Identity. Equality.