CHAKRAVARTL AND HELD in manganese ngelapese food vse. The aversupplies 0.003p and Scoular, ngelapese food vobale content, xeriments with Mimum copper ag daily. The (19351 is 1-2 iet is detinitely muni requiree diet appears the minimum -d by the Nasleton (1939) intake of zinc sod appears to mtent, and on daily. 0 and zine-45 her and with This is to be are found priis (Dunning, strontium-90 ere local fruit ‘gher levels of with higher ut contributes nus the most. laily intake of | tor calcium take in terms rm¢ Cay is is about three times that of previous estimates ( Dunning, 1957: Cohn ef af... 1960). Those estimates were based on an estimated daily intake of 0.8 vy of calcium, or about three times the value reported here. Thus. the significant ditference between this and previous values reflects a discrepancy between observed aud estimated calcium intake. It is not svithin: the scope of this report to enter ito an estimation of body burden, which has been discussed in detail by Cohn et ad. (1960). Flowever, it is of interest to uote that the body burden ay estimated trom urinalysis data (Woodward cf ul, 1930) and discussed hy Cohn ts consistent with a discrimination factor of four and oa daily intake of about 100) pac Sr’? og caletum. This would indicate either that the discrimination factor is greater than four or that these samples do not correctly represent daily caletum intake. In any case, it is ubvieus that continued study of Sc’? movement at Rongelap Atoll ty Hecessary. Rations containmy the higher levels ot zine-63 also contain the higher levels of stable zinc, indicating that local sea ioods may be the main source of zine in the diet. Cesium-137, strontium-90, and cobalt-00 show no definite correlation with potassium, calcium, and cobalt, respectively, indicating that these elements are in large measure supplied from imported foods. With the current means of sanitation—pit toilets and burial of garbage—on Rongelap and Eniaetok Islets there must be a net ad- 39 + 121.6 Basu, K. P., and Af. C. Malakar. 1940. Cron and manganese requirements of the human adult. Ym Catala, Rene L. A. 1937. Q~ 127 OO 27,0 59 36.1 SlL+ X28 ofnul, Chem. 27, fea, ms LE, Joos. Robertson. aad RO OAL Conard, 1400, Radioisotopes and environmental cireumstances: The internal radivactive contaniina- tion of a Pacific island community exposed to focal tallout. A symposium on radioisutupes mathe: biesphere. Richard s. Caldecott and Leon A. Snvder, eds. Chiversity of Minnesota Printmg Department, p. JO. Dunuimng, (1 AM. 1957. Radioactive contamination ot certain areas in the Pacifie Ocean irom nuclear nussion tests. U.S. Atumic Energy Comreport, CoS. Government Printing tatice, Washington, D.C. Eggieton, WL G. BF. 1939. The cine content ut epidermal structures in beriberi. J. Indian Chem. Soc. UT, 37. Report on the Gilbert Islands: Some aspects of human ecology. .\toll Research Bulletin No. 39, The Pacific Science Board. National Academy of Sciences, Na- tional Researeh Council, Washington, D. C. 197 pp. Chakravarti. D., and T. Joyner. 1960. Potassium as an index of naturally occurring radioactivity Brochem. J. 33. 403, Pleiecher, IW. DB. C. Southworth, J. H. Hudecker, and M. Af Tuckerman. 1438. Determunauon of phosphorus in urganic compounds. Rapid micro and semi-micro method. <i. Chem. 30, 152. Harp. Mo JL, and FL LE Seoular. 1952. Cobale inetabolism of young college women on self- selected diets. J. Nutrition 47. 67. Hibbard, P. L., and P. R. Stout. 1933. The eostimation of potassium by titration of the cobaltimitrite with potassium permanganate. J. dssoc. Ime. Aur. Chemists 16, 137. Joyner, T., and D. Chakravarti. 1960, The anal- UWFL-68. is low in ash content as compared with im- REFERENCES 47,3 ater and marie organisms, ‘lb, ported foods. .\ quantitative evaluation of we Se”, g Ca 48 + 106.3 photometric determination of calcium in sea vsis of some trace clements in export and import records. 43m 122.3 Chew. H. J. and T. G. Thompson. 1955. Flame dition of minerals. The chief export, copra, the addition would require comparison of OF + d14 in tuna muscle. Trans, din. Pisheries Soc. 89, 312. Chon, T. P.. and W. H. Adolph. 1935, Copper metabolism in man. Biuchem. J. 29, 476. fish tissues. U.S. Atomic Energy Commission report No. Laboratory of Radiation Biology, University of Washington. 14 pp. Kawabata, T., and FE. E. Held. 1958. 0 method tor the determination of strentium-90 in bio- logical materials. Applied Visheries Labora- tory (now Laboratory of Radiation Biology}, University ot Washington. Unpublished. Went, N. L. and R. A. MecCanee. 1941, The absorption and exeretion of “minor” elements by man. 2. Cobalt, nickel, tin and manganese. Biochem. J. 35, 877. Kraus. K. A. and G. E. Moore. 1953, Anion- exchange studies. VL. The divalent transition elements manganese to zinc in hydrochloric acid. J. dit. Chem. Soc. 18, 1460. Murai. Mary. 1954. Nutrition study in Micronesia. Atoll Research Bulletin No. 27, The Pacitic