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Features

Pneumatic Tools in Iron Foundries

By Frank C. Perkins

The Action of Oxygen, on Metals

A Valuable study

By Eduard Jordis and W. Rosenhaupt

Women Engineers

The Obstacles in Their Way

By Karl Drews

Boiler Blow-Off Connections

A Description Of Various Sytems

By R. T. Strohm

The Theory of High Speed Tool Steel

By George Auchy

Glass Making by Machinery

By George A. Macbeth

Caisson Foundations of Skyscrapers

Sand Hogs and the Work they do

By T. Kennard Thomson

New Eiffel Tower Wireless Plant

The Nodon valve or an Efficient Rectifier for a dollar

By Cyril O. Smith

Fermentation in the Light of Modern Science

The Setting of Portland Cement

The Amount of Water Required

By C. K. Francis

Decorative Insects

Bugs that Serve as Adornments

The Geology of the Inner Earth

The Formation of Iron Ores

By F. J. W. Gregory

Engineering Notes

Trade Notes and Formulæ

Tupelo-A Useful New Wood

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    March 07, 1908

    Think Outside the Gift Box