The SciencesQuartz-Like Glass, New X-Ray Units for Fighting Cancer, and moreBy Alexander Klemin, F. D. Mchugh on September 1, 1939AdvertisementABOUT THE AUTHOR(S)Recent Articles by Alexander KleminInstrumentation, Measurement, and ControlMust Flying be a "Racket"?Ideas in the AirRecent Articles by F. D. MchughStopping The Marine Borer, Trunk-Size Refrigerated Container, and moreMachines Pick Cotton, But—Instrument Measures Musical Frequencies, Bonnet Protects Giant Bearing, and more