-21- CONC LUS IONS The gross chemical composition of the Rongelapese diet indicates that it is low in fat, protein and ash but fairly high in carbohydrate. The variation in gross chemical compo- sition of the diets examined may be accounted for by the broad variability oc the items constituting the different diets, The habitat of the Rongelapese probably does not demand a highenergy diet which may partially justify the lower fat intake. Levels of calcium and phosphorous seem to be below the minimum required for maintenance of a proper calcium-phosphorous balance in a good diet. The diet seems to be adequate in magnesium and potassium but slightly low in sodium. Compared to the minimum daily requirements of human adults for nickel, copper, iron and zinc, the nickel, manganese, cobalt and copper contents seem to be high in the 24-hour Rongelap rations. content is cobalt, The manganese low but the iron and zinc contents compare favorably with the minimum daily requirements. The higher levels of cobalt-60 and zinc-65 are associated with each other and with those rations which contained local fish. The higher levels of strontium-90 and cesium-137 are found where local fruit was consumed. Coconut contributes little