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Though too busy for laboratory research, Lawrence found spare time for inventing a color TV tube in his basement, for afternoon tennis, duck shooting with his brother, swimming and sailing with his six children and wife (a Harvard-trained bacteriologist). This summer he went to Geneva as one of three U.S. delegates to the East-West talks on detection of nuclear tests, there fell ill and had to fly home. Last week Physicist Lawrence went into surgery for ulcerative colitis—an inflammation of the colon—from which he had suffered for years. A few hours later he died.