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The Spanish Ship of War Pelayo

Steam Lifeboat

The Resistance of Slide Valves

Railroads in New Regions

The New Magazine Gun used by the German Army

Zincography and Zinco Printing Plates


Liquid Fuel

The Sulphur Industry of the United States

By Harry C. Myers

Improved Warping Machine

By Robert Hall

Quick Setting Cement

Manufacture of Oil of Sassafras

By Thomas C. Harris

The Air Brush

The Significance of Uric Acid

Fluorine by the Electrolysis of Hydrogen Fluoride


By B. W. Richardson

An Improvement in the Production of Sulphuric Acid

By H. Sprengel

Prof. S. P. Thompson's Dynamo Telephones

The Montaud Accumulator

Natural Solutions of Cinnabar, Gold, and Associated Sulphides

By George F. Becker

The Medico-Legal Aspects of Hypnotism

On Some Phenomena Connected with the Freezing of Aerated Water


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April 02, 1887

Of Shamrocks and Science

Happy St. Patrick’s Day