-12- of other areas is probably not meaningful. The gross per- centage composition indicates that the diets are generally low in fat, protein and ash but fairly high in carbohydrate content. Comparing the data in Table 3 with recommended daily dietary allowances as published by the Food and Nutrition Board of the National Research Council it appears that the 24-hour food rations of the Rongelapese are generally below the recommended level for protein. Since fat allowances are based at present more on food habits than requirements, on physiological no definite conclusion can be drawn regarding the apparently low fat content of these diets. The habitat of the Rongelapese probably does not demand a high-energy diet, which may partially justify the lower fat intake. The calcium content of the 24-hour ration seems to be much lower than the suggested normal requirement Data, 1958). On the same basis, (National the magnesium levels seem to be adequate but the phosphorous levels are far below what is necessary to maintain a proper calcium phosphorous balance in a good diet. normal The sodium levels appear to be slightly below the suggested intake levels, although no information is available as to the minimum daily requirement of sodium. potassium level is lower than the generally the case in most diets. sodium content, The which is