1. Anaesthetics, Their Uses and Administration,;BUXTON, D.W.,1900
2. Daily Telegraph, Oct. 23rd, I959, p. 22, col. 4.
3. Inhalation Anesthesia,;Editorial (Ig95), Brit. med;Y,1937
4. MAGOUN, H. W. (1950), Physiol. Rev., 30, 459-
5. MARTIN, J. P. (1949), Lancet, i, I. I5. MENDELSOHN, D., MACDONALD, D. W., NOGUEIRA, C., and KAY, E. B. (1960), Anesth. et Analg., 39, Io0.