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Features

Electric Light for Marine Use

A Peruvian Infernal Machine

Effect of Starvation on the Blood

Color Blindness in Connecticut

A Good Year for Statistics

Influx the Source of Invention

Artificial Citric Acid

Mechanical Inventions

Clutch for Bow Strings

Fire in a Pennsylvania Coal Mine

New Coupler

A Lens With Variable Focus

Yellow and Red Phosphorus in the Manufacture of Matches

By E. Eichler

Miscellaneous Inventions

A Substitute for the Crank

Improved Book-Rack

The Steamer Pittsburg

New Air Gun

The Glycerine Barometer

Taguan Flying Squirrel

Clothing in its Relation to Health

Engineering Inventions

Artificial Cold

Facts About Cheese

Communications Received

Departments

  • Departments

    New Inventions

  • Recent Inventions

  • Business and personal

  • Notes and Queries

  • New Books and Publications

  • Index of Inventions

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