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On Gas Engines

By Edward Delamare-Deboutteville

The Manchester Ship Canal

Recent Improvements in the PulsoMeter

Wire Straightening Machine

Armor Plate

Military Velocipede in France

Elias Loomis the Physicist

By H. C. Hovey


By Frank Browne

The Ageing of Logwood

A Portable Sun Dial

Process of Preventing the Oxidation of Metals While in a Heated Condition

By Gorge Wyckoff Cummins and James Henry Coleman

The United States—Their Growth in Population in two Hundred Years

Luminous Night Clouds

The Fall of a Factory Chimney

Zoology a Hundred Years Ago

The New Museum of Natural History, Vienna

On the Purification of Alcohol by means of Hydrocarbons

By W. S. Squire

Building Plans and Specifications

Useful Engineering Books


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    Patents- September 14, 1889

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