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History of the Electric Telegraph

The Calumet and Hecla Mines and Plant

The Captive Balloon at the Turin Exhibition

Lifting Bridge for Double Track Railway

The Heavy Guns of 1884

By E. Mactland

Retouching Gelatine Negatives

Sheraton Drawing Room Furniture

Liquefaction of Gases

Freezing of Ether and Alcohol

Bleaching Agents- of the Future

By E. Dwight Kendall

Photographing a Pistol Ball and Sound Waves

Pyroxylin-Gun Cotton

By Gustavus Pile

How the Earth is Weighed

The Extinct Lakes of the Great Basin

The Guise Co-Operative Experiment

A Dog Plans and Executes with Reference to the Future

Military Tournament at the Agricultural Hall

Prize Dogs of the Vienna Dog Show

The Economic Uses of the Mezquit


  • Departments

    Patents - August 16, 1884

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis