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Electrification of the North Eastern Railroad of Great Britain

By the English Correspondent of the Scientific American

Gas Turbines

Pumping Tar and other Heavy Liquids

Contemporary Electrical Science

The Pino Hydroscope

The Constitution of Portland Cement from a Physico-Chemical Standpoint

By Clifford Richardson

Color Photography by New Method

New Apparatus for Charging and Discharging Gas Retorts

By Emile Guarini

New Method of Manufacturing Oxygenated Water

A New Theory of the Origin of Species

By A. Dastre

Current Wheels: Their use in Lifting Water for Irrigation

Man-Tracking

By Stanhope Sprigg

Electrical Notes

Engineering Notes

Trade Notes and Recipes

Departments

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December 10, 1904

Think Outside the Gift Box