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Increase in the Rubber Manufacture

A Quarantine Fleet for the Mississippi

Government Use of Patents

American Industries-Our Illustrated Series

Burning of Oil Tanks by Lightning

A Patent Case of General Interest

Series Forty-Nine

The Boss Puzzle Abroad

Disastrous Steamboat Accident

American Industries.--No. 49

Automatic Safety Cylinder Cock

A Novel Wheelbarrow

Engineering Inventions

Improved Street Lamp

Repairing Spiral Springs

By E. N. Maxwell

Improved Cartridge

New Ore Separator

Electro-Thermic Telephone

New Telephone Experiments

Novel Gate Closer

Miscellaneous Inventions

New Car Mover

The Terebella and Hermella

Fish Parasites

By A. W. Roberts

The Structure of Matter

Communications Received

Departments

  • Departments

    Correspondence

  • Notes and Queries - July 17, 1880

  • Business and Personal - July 17, 1880

  • Index of Inventions - July 17, 1880

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July 17, 1880

Complex Causes. Alternative Solutions.

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