RT Journal A1 Kratochvil CH T1 BRitish medical bulletin, JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1969 FD July 1 VO 124 IS 1 SP 121 OP 121 DO 10.1001/archinte.1969.00300170123036 UL http://dx.doi.org/10.1001/archinte.1969.00300170123036 AB This issue of the British Medical Bulletin is not designed for the busy practitioner who is inundated with clinical journals. But, except for this minor disclaimer, one must give it the highest marks. The brief introduction by Sir Rudolph Peters sets the stage for what is to come, although I believe he is unduly conservative in singling out only the sections on immunology and insect control as being of primary interest to practical medicine. I, for one, feel that the chapters entitled "Some Effects of Pharmacologically Active Compounds on Membranes" by Allison, and "Membrane Functioning in Preparations from the Mammalian Brain" by McIlwain to be most useful. I would also respectfully suggest that the remarks relating to the internal environment as envisaged by Claude Bernard are in need of revision, for the research on circadian rhythms has pointed out the pitfalls in fixating on a constancy which is anything