Science: Prima Donna No. 2

Heavy hydrogen was king of the meeting of the American Chemical Society in St. Petersburg, Fla. last week. Its discoverer, Dr. Harold Clayton Urey of Columbia University, opened a heavy hydrogen symposium with a review of its history before 700 members.

Three years ago Professor Fred Allison of Alabama Polytechnic Institute was studying various elements by the magneto-optic method when he got unexpected results which led him to suspect the existence of a hydrogen isotope whose nucleus was twice as heavy as that of ordinary hydrogen. Not long afterward Dr. Urey and two associates...