The SciencesPerfect Exposures, American Grub Now Kills Snakes and moreBy F. D. Mchugh on March 1, 1934AdvertisementABOUT THE AUTHOR(S)Recent Articles by F. D. MchughQuartz-Like Glass, New X-Ray Units for Fighting Cancer, and moreStopping The Marine Borer, Trunk-Size Refrigerated Container, and moreMachines Pick Cotton, But—