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Professor Max Muller

Samuel Alfred Varley

Electrolytic Production of Bleaching Agents

The Works of the Schulz-Knaudt Company, Limited

The New York and New Jersey Bridge-Route, Union Station and Terminals

History of Artificial Illumination

Gas Lighting at the Paris Exposition

Pneumatic Leaf Turner

Toy Parachutes

Hydraulic Clock


Our Sense of Color

By William Rutherford

The New Concentric Lens

Boiler Feed Waters and Incrustation

The Dahomey Expedition

Useful Engineering Books


  • Departments

    Patents!- October 22, 1892

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