"It is a dangerous practice to get into, criminals being what they are. But it is so interesting. . . ." Dr. C. Everett Field, Director of the Radium Institute of New York was receiving newsgatherers at his laboratory. "Here," he said "look at this blue dish. This was a yellowish glass. We used it in our radium work. Gradually the color changed from yellow to this beautiful blue." He showed them other glass that had been rid of ugly colors and rendered clear blue-white. He showed them diamonds turned in a few days...
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