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Features

Diametral and Circular Pitch

A British Four-Cylinder Balanced Compound “Atlantic” Locomotive

By H. Coleman

Cement Materials and Industry of the United States

By Edwin C. Eckel

How they make the Time Tables

By M. C. Miller

The Mechanics of Luminosity

The Physiological Effect of Life in the Alps

The Ways of the Ant

Geological Time

By Warren Upham

Origin and history of Gun-Cotton

The Commercial Production of Oxygen by the Liquid Air Process

By Georges Claude

Reservoir, Fountain, and Stylographic Pens—IX

By James P. Maginnis

How to Cook Cereals

Electrical Notes

Science Notes

Contemporary Electrical Science

Engineering Notes

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