- 359 - Allen, T.H., Anderson, E.C., and Langham, W.H. Total body potassium and gram body composition in relation to age.. J. Gerontology, 15, 348-357, 1960. Anderson, E.C. and Langham, W.H. Average potassium concentration of the human body as a function of age. Science, 130, 713-714, 1959. Conard, R.A. An attempt to quantify some clinical criteria of aging. J. Gerontology, 15, 358-365, 1960. Conard, R.A., and Hicking, A. Medical findings in Marshallese people exposed to fallout radiation. 192, 457-459, 1965, Results of a Ten- Year Study. J, A.M. A, Conard, R.A., Rall, J.E. and Sutow, W. W. Thyroid nodules as a late sequela of radioactive fallout. The New England J. of Med, 274, 1391-1399, June 23, 1966, Cronkite, E.P., Bond, V.P., Conard, R.A,, Shulman, N.R,, Farr, R.S. Cohn, S.H., Dunham, C. L. and Browning, L.E. Response of human beings accidentally exposed to significant fallout radiation from a thermonuclear explosion. J.A.M.A. 159, 430-434, 1955. Hollingsworth, J. W., Goro, I and Conard, R.A. Skin aging and hair greying in Hiroshima Geriatrics, 16, 27-36, 1961. Hollingsworth, J. W., Hashizume, A. and Jablon, S. Correlations between tests of aging in Hiroshima subjects - an attempt to define physiologic age. The Yale J. of Bio. and Med, 38, 11-26, 1965, Sutow, W. W., Conard, R.A, and Griffith, K.M. Growth status of children exposed to fallout radiation on Marshall Islands. Pediatrics 36 (5), 721-731, 1965, cummary Late effects of radiation in a Marshall Island population accidentally exposed to radioactive fall-out in 1954 are reviewed, The most significant findings have been in regard to the development of thyroid abnormalities which have occurred largely in children exposed at less than 10 years of age, and presumably caused by irradiation of the thyroid gland from internal absorption of radioiodines in the fall-out and gamma radiation. Possible radiation induced ageing effects were studied in 90 adults, 36 exposed and 55 unexposed by measurement of 14 criteria usually associated with ageing