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3. The new data on strontium in deep-sea sediments indicate that though foraminifera and coccoliths may be low in strontium (1,200–1,800 p.p.m.) yet the deep-sea carbonate deposits are higher as a whole than previously reported values by Turekian, K. K., and Kulp, J. L., Geochim. et Cosmochim. Acta, 10, 245 (1956).
4. Alexander, G. V., Nusbaum, R. E., and MacDonald, N. S., J. Amer. Water Works Assoc., 46, 643 (1954).
5. Arrhenius, G., in Goldberg, E D., Hill, M. N., Iselin, C. O'D., and Munk, W. H. (edit.), The Sea, Ideas and Observations, 3 (Interscience, in the press).