1. Colloques Internationaux No. 112,Psychophysiologie, Neuropharmacologie et Biochemie de la Crise Audiogène (Centre National de la Recherche Scientifique, Paris 1963).
2. J. L. Fuller andM. E. Smith, Amer. J. Physiol.172, 661 (1953).
3. M. Hamburgh andE. Vicari, J. Neuropath. exp. Neurol.19, 461 (1962).
4. R. G. Busnel andA. Lehmann, J. Physiol. (Paris)53, 285 (1961).
5. Hexafluorodiethyl ether (Indoklon) was generously supplied by the Ohio Chemical and Surgical Equipment Co. through the courtesy of Dr.A. H. Neeley, Research Laboratories, Murray Hill (N.J.), and Dr.B. E. McLaughlin, Medical Research Foundation of Philadelphia.