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Illuminating Devices in the Great War—II

An Account of Aerial Lighting Devices and Their Development from 1914 to the Armistice

By H. M. Brayton

Selecting Wood for Airplanes

A Discussion of Considerations Necessary in Selecting Materials and the Effects of Some Hidden Defects

By Arthur Koehler

Cold Storage of Food—I, Researches on Fog-Signal Measurement, and more

Consideration of the Problems Involved Fundamentally Aids in Developing Appropriate Types of Storage

By Ingrar J*amp*ouml;rgensen and Walter Stiles

Experimental Wireless Telegraphy and Telephony—V

Describing the More Advanced Types of Receiving Sets, with Particular Reference to Post-Bellum Practice

By Louis Gerard Pacent and Austin C. Lescarboura

Swiss Railways Extend Electrification

By S. Dossenbach

Aids for the Deaf

Mechanical Devices to Remedy Defective Hearing and Why They Often Disappoint

By F. Womack

Water-Resistant Glues, Aluminum Soldering, and more

By F. L. Brown


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