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Features

Rare Monkeys

The Great Earthquake

Insulator for Electric Wires

Spring Lock

Locomotive Boiler Check Valve

Steam Engine

Horse Collar

Michel Eugene Chevreul

Improved Shovel

Stopper Fastener

The Galatea and Mayflower

A New Long Distance Telephone System

The Acme Automatic Safety Engine

An Inexpensive Air Pump

By Geo. M. Hopkins

Agricultural Inventions - September 18, 1886

Engineering Inventions - September 18, 1886

Miscellaneous Inventions - September 18, 1886

To Inventors - September 18, 1886

Departments

  • Letters

    Correspondence - September 18, 1886

  • Departments

    Business and Personal - September 18, 1886

  • Notes and Queries - September 18, 1886

  • Index of Inventions - September 18, 1886

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September 18, 1886

Complex Causes. Alternative Solutions.

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