Human nutrition and the sophistication of foods and feeding habits; some observations, implications, and speculations.

Even the " intelligent, highly reactive personality " must, 30mehow, come to terms with his environment by a process of mutual interaction, failing which the result can only be withdrawal, which may well be an element in psychopathology. This may be the reason why genius is so often associated with disease and must therefore be regarded as abnormal. It is, of course, not necessarily the "healthy " who contribute most to human advancement, and, indeed, the reverse may be the case; but health must not, on this account, be thought of as a state of dull, uninspired mediocrity. The stability of society may well depend on " normal," "healthy" people, and it is the aim of the infant science of " hygiology " to be able to recognize health, if possible to measure it and to discover its causes. For has not health its specific causes no less than disease ? The results of the Aberdeen survey may shed much light on some of these problems.-I am, etc., JoHN LANDON, Bexleyheath. Chairman, Kent Paediatric Socicty Research Subcommittee.