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Lignite, Peat, and Coal-Dust Fuel

The Viaduct at Fort Dodge, Iowa

By Bruno Schroeder

The Value of Rational Methods in Coke Production

The Development of Marconi's System of Wireless Telegraphy

By Emile Guarini

Electric Trains for London Railway

Industrial Trusts

By W. Smart

Lacquer: Its Preparation and Use

By Randolph I. Geare

Practical Air-Brake Instruction for Railroad Men

Hydrocyanic-Acid Gas against Household Insects

By L. O. Howard

Cosmic Evolution

By A. W. Bickerton

Milne's Seismological Observations and Earth Physics

Recent Studies in Gravitation

By John H. Poynting

Voyages of the Ice-Breaker “Ermack”

Trade Suggestions from United States Consuls

Selected Formulæ



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