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January 11th, 1932. Dr. Jemes E. Ives, Room 1-123 Bldg., 16 Seventh St. S.W. Tiesh. D.C. Dear Dr. Ives: I an wondering if you had occasion to determine the electroscopic espacity as well as the voltage which porresponds to the scale readings on the Wulf-Hess gamma ray electroscope which we loaned you for your recent investigation If you happen to have this data I would very much appreciate your forwarding it to me as it would save considerable time in obteining seme. Very truly yours, Vice President. HHBarker: RH