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Features

English and German Tank Locomotives

By Frank C. Perkins

The Water Supply of London.—II

By the English Correspondent of the Scientific American

Farm Machines that seem Almost Intelligent

Beton Frette

The Theory of Wehnelt Interrupters

Anti-Friction Bearings

By Henry R. Lordly

Balata and its Employment

Portable Wireless Telegraph Equipments in the German Army

By A. Frederick Collins

The Milk Question and Mortality among Children

Contemporary Electrical Science

Radium, Polonium, and Actinium

By William J. Hammer

Development of the Ceramic Art in China

By Randolph I. Geare

Italian Endurance of Arctic Cold

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

Operations Off Kiao Chau

By Fred T. Jane

The Bacterial Treatment of Trades Waste

An Interesting Problem in the Chemistry of Metals

Trade Notes and Recipes

Trade Suggestions from United States Consuls

Patents!

Selected Formulæ

Departments

  • Improvements in Sugar-Refining during the Last Twenty-Five Years

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February 28, 1903

Think Outside the Gift Box