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The French Beet Sugar Industry

Crushed Steel and Steel Emery

An Artificial Abrasive Produced from Steel

By M. M. Kann

Improved Filtering and Sterilizing System

The Langley Aerodrome

Trying to Stop the Work of the Teredo

The New Department of Commerce

The Apparent Change of Position of the Bull's Eye on a Target during the Day

By Friedrich W. F. Riehl

Crystallized Peroxide of Hydrogen

By Wilhelm Staedel

The Radio-Activity of Uranium

By Frederick Soddy

How some Important Results in Plant Breeding are Accomplished

By Willet M. Hays

The Scientific Aspect of Modern Medicine

By Frederic S. Lee

The Naval War Game between the United States and Germany.—XI

By Fred T. Jane

Contemporary Electrical Science

High Temperature Electro-Chemistry: Notes on Experimental and Technical Electric Furnaces

By R. S. Hutton

Venomous Serpents.—V

By Randolph. I. Geare

Trade Suggestions from United States Consuls



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