A WHOLE-DAY conference of the Nutrition Society will be held at the London School of Hygiene, Keppel Street, London, W. C. I, on October 17, to discuss “Trace Elements in Relation to Health”. Papers will be read by Dr. H. H. Green (“Significance of Trace Elements in Relation to Diseases of Plants and Animals”), Dr. R. L. Mitchell (“Distribution of Trace Elements in Soils and Grasses ”), Prof. D. Keilin and Dr. T. Mann (“Copper, Zinc and other Trace Elements in relation to Physiological Function and Enzyme Systems”), Prof. T. Dalling (“Enzootic Ataxia or 'Swayback' of Lambs in England in relation to Copper Feeding of Ewes during Pregnancy” -film with running commentary), Sir Charles Martin (“Cobalt and other Trace Elements in relation to Disease in Australasia”), Dr. W. Lyle Stewart (“Sheep Tining' in Britain”), Dr. M. M. Murray (“Fluorine in Human Nutrition ; a, Biochemical Aspects”), Dr. D. C. Wilson (“Fluorine in Human Nutrition ; b, Clinical Appreciation of Fluorine Distribution”), Mr. F. H. Kemp (“Fluorine in Human Nutrition ; c, Radiological Investigations”), Mr. F. Blakemore (“Industrial Fluorosis of Animals in England”), Mr. W. S. Ferguson (“'Teart' of Somerset; a Molybdenosis of Farm Animals”), Dr. R. A. McCance and Miss E. M. Widdowson (“Absorption and Excretion of Trace Elements”). The chair will be taken at the morning session by Dr. J. Russell Greig, and at the afternoon session by Prof. C. R. Harington. Further details of the Nutrition Society can be obtained from the hon. secretary, Dr. Leslie Harris, Nutritional Laboratory, Cambridge.