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Features

Mining and Manufacture of Rock-Salt

The North Sea Fisheries

The Apprenticeship System

By William P. Smythe

Improved Machinery for Wheel Making

The Fuels Competition of the Automobile Club of France

A New Form of Friction Clutch

The Summer Meeting of the Iron and Steel Institute

Correspondence

Radio-Activity—the Secret of Radium's Light and Heat

The Modern Craft of Metal Working

By Day Allen Willey

A Correction

The Influence of Brain-Power on History

Sir Norman Lockyeh'S Presidential Address to the British Association

Contemporary Electrical Science

The Steel-Frame Side-Door Passenger Car Built by the Illinois Central Railroad Company

The Bird Life of Autumn

By Frederick A. Ober

The Vickers-Maxim Dismountable Gun

Engineering Notes

Electrical Notes

Trade Notes

Trade Suggestions from United States Consuls

Patents!

Selected Formulæ

Departments

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    October 03, 1903

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