1. Desmedt, J. E., Rev. Neurol. (Paris), 96, 505 (1957); J. Physiol., 140, 3P (1958).
2. Schueler, F. W., J. Pharmacol., 115, 127 (1955).
3. MacIntosh, F. C., Birks, R. I., and Sastry, P. B., Nature, 178, 1181 (1956). Gardiner, J. E., J. Physiol., 138, 13P (1957). MacIntosh, F. C., Birks, R. I., and Sastry, P. B., Neurology, 8, 90 (1958).
4. Rosenblueth, A., and Morison, R. S., Amer. J. Physiol., 119, 236 (1937).
5. Harvey, A. M., and Masland, R. L., Bull. J. Hopkins Hosp., 69, 1 (1941).