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Features

A Quarantine Fleet for the Mississippi

Increase in the Rubber Manufacture

Government Use of Patents

American Industries-Our Illustrated Series

A Patent Case of General Interest

The Boss Puzzle Abroad

Series Forty-Nine

Disastrous Steamboat Accident

Burning of Oil Tanks by Lightning

American Industries.--No. 49

A Novel Wheelbarrow

Improved Street Lamp

Engineering Inventions

Automatic Safety Cylinder Cock

Improved Cartridge

Repairing Spiral Springs

By E. N. Maxwell

New Ore Separator

Electro-Thermic Telephone

New Telephone Experiments

Miscellaneous Inventions

Novel Gate Closer

New Car Mover

Fish Parasites

By A. W. Roberts

The Terebella and Hermella

The Structure of Matter

Communications Received

Departments

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    Correspondence

  • Business and Personal - July 17, 1880

  • Notes and Queries - July 17, 1880

  • Index of Inventions - July 17, 1880

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July 17, 1880

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