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The New Morrison Street Bridge, Portland, Oregon

By H. A. Crafts

Large Electric and Steam Locomotives

Freight Helper Electric Locomotives

The Development of the Suez Canal

The Modern Manufacture of Alcohol

Recent Electrical Developments

Resistance Furnaces

Magnesium Sulphate as an Anesthetic


By Oliver C. Farrington

The Queen Ant as a Psychological Study

By William Morton Wheeler

Clearing New Land

By Franklin Williams

The Art of Inventing

By Edwin J. Prindle

Wireless Telegraphy throughout Europe

Malleable Cast Iron

By G. A. Akerlind

Contemporary Electrical Science

Engineering Notes

Science Notes

Trade Notes and Formulæ


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