The SciencesNight Safety, Last Word in Welders, and moreBy Alexander Klemin, D. H. Killeffer, F. D. Mehugh on July 1, 1938AdvertisementABOUT THE AUTHOR(S)Recent Articles by Alexander KleminInstrumentation, Measurement, and ControlMust Flying be a "Racket"?Ideas in the AirRecent Articles by D. H. KillefferIndustrial ConsultantsThe Pilot Plant's Value to IndustryIndustry Gets NoseyRecent Articles by F. D. MehughAustralia Claims Oldest Live Thing, Telepathy's Reality and more