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Show Ray Finds Radium said to he capable of detecting them at a distance of 100 feet The radium which was recovered Is the property of Dr. Paul Kerrier, and Is one of the two largest supplies ot the precious substance In this city. that the brass tube, about the size of a match-end, was discovered In the Inst box. The electroscope, It was stated, picks up the radium emanations, being so i sensitive that it can recoid them ; from a radlollte wutch. Two quart rlhcrs that are suspended u I most to get her are charged with electricity, which repels them. When the fibers are exposed to radium, which absorbs electricity from the air, they are drought together, the speed with which they approach each othei Indicating In-dicating the amount ol radium In the vicinity. No matter how minute the radium purtlcles, the Instrument Is Pasadena, Calif.--When one of Dr Cobert A. Mlllikan'a electroscopes, de veloped In connection with bis cosmic ray experiments, was enlisted as a detective, a problem as dllliciilt as ''looking fur a needle In a haystack" was solved within two hours. Through the use of the delicate In strumenl 4,000 worth of radium which was accidentally thrown out with some aHl.es nt the Pasadena hospital was recovered. John Hansom, California Institute of Technology technician, was sent to the hospital with one of the cosmic ray machines and, alter barret aftei barrel of ashes bad been brought in front of the electroscope the Instru ment Indicated that radium was tires ent in the last barrel. While hospital oflk-lals anxlousl) watched the proceedings In the base ment of the Institution the barrel con tabling the capsule tilled v-lth flf milligrams of the most precious sun stance In the world was emptied lnh small boxes. It was only when the oh servers wert about to give up hope |