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2. Bates, J. A. V., and Ettlinger, G., Arch. Neurol. (Chicago) (in the press).
3. Kelvin, R. P., and Mulik, A., Quart. J. Exp. Psychol., 10, 187 (1958). Krauthamer, G., Ph.D. thesis, New York University College of Medicine (1959).
4. Gebhard, J. W., and Mowbray, G. H., Amer. J. Psychol., 72, 521 (1959).
5. Cannon, R. C., Ph.D., thesis, Department of Psychology, University of Colorado (1955). Krauthamer, G., as ref. 3.