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Last Year's Dead Letters

The Utilization of Wastes and By-Products in Manufactures

With Special Reference to the Decade of 1890-1900

By Henry G. Kittredge

The Underground and Elevated Electric Railway in Berlin—Now Completed and in Operation

By Frank C. Perkins

Shallow-Draught Steamer

The Smokeless Combustion of Bituminous Fuel

Oil and Grease Separator

The World's Coal Production and Consumption

Temperatures at Great Altitudes

Radio-Activity and the Electron Theory

A New Process for Treating Fine Iron Ores for Blast Furnaces

Ratios of the Atomic Weights

Prof. J. J. Thomson on Radio-Activity

Disappearing Guns

The Development of the German Chemical Industry

Gymnastic Exercises of the 12th Regiment of Italian Sharpshooters

The Texas-Louisiana Oil Field

Report of Bureau of Steam Engineering on Liquid Fuel for Naval Purposes

The Voyage of the S. S. “Mariposa,” Using an Oil-Fuel Installation Exclusively under her Boilers

Plants on an Irish Bog

Electrically-Operated Canals in Belgian Coal-Mining Districts

The Core of an Induction Coil

By William A. Del Mar

Marconi's “Carlo Alberto” Experiments

By Emile Guarini

Turbine Interrupter for Electric Currents

Cotton Growing in Cuba

The Genesis of Coal

Stars by Daylight

Selected Formulæ

Trade Suggestions from United States Consuls

Patents!

Trade Notes and Recipes

Departments

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    November 15, 1902

    Think Outside the Gift Box