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The New Tower Bridge, London

Improved Regenerative Gas Furnace

Stern Wheel Steamer

Sibley College Lectures.–X

By the Cornell University Non-Resident Lecturers in Mechanical Engineering

By E. D. Leavitt

Oliver Evans and his Inventions

By Coleman Sellers

The Transformation of Heat into Electrical Energy with Batteries, Thermopiles, and Dynamo Machines

A New Damping Apparatus

The Edelmann Voltameters and Amperemeters

An Electric Light Fire-Damp Indicator

An Electric Fuse

Voltaic Cell with a Solid Electrolyte

By Shelford Bidwell

The Propulsion of Electric Pendula

By P. H. Vander Weyde

Electro-Magnetic Rotation of Unpolarized Light

By L. Sohncke

Secondary Electrolysis

By E. Semmola

Cardiac Pulmonic Balance.—A Clinical Study

By Benjamin Ward Richardson

On a Hyperbolagraph

By H. H. Cunnynghame

Delmas' Hot Air Burner

Effect of Chloride of Iron on the Teeth.—An Experimental Study

By George W. Weld

Flamingoes

Water and Carbonic Acid from Space

A Waterspout in the Roadstead of Toulon

The Philadelphia Electric Railway

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July 31, 1886

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