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The Case Hardening of Steel

What it is and how it is Done

By G. Shaw Scott

The Steaming of Timber

Cleaning Sap Cells for Preservatives

By Octave Chanute

Elements of Electrical Engineering.—V

Constant-Potential Generators

By A. E. Watson

The Trend of Storage Battery Development

By L. H. Flanders

The Atomic Weight of Radium

A New Determination

By M. M. E. Curie

Helion Filaments

By Walter G. Clark

Bridge between Duisburg and Homberg

A New Structure across the Rhine

The Cracking of Aluminum Castings

Fire Boat Protection

Considered from the Viewpoint of the Fireman and the Engineer

By Edward F. Croker

Notes on the Design of Reinforced Concrete Beams

Determination of Melting Points of Metals

The Age of the Earth

Artificial Life

The Work of Prof. Delage

The Development of Armored War Vessels.—XIII

Armor Plating in the United States

By J. H. Morrison

The Limits of the Mind and the Limits of Reality

Kefir and Yohourth

Lactic Substances that Promote Health

Purple Bacteria

By A. Nestler

Astronomy on Mont Blanc

Professor Janssen and the Mont Blanc Observatory

By H. Radau

Engineering Notes

Science Notes - November 23, 1907


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