1. Asdell, S. A., in The Ovary, edit. by Zuckerman, S. (Academic Press, 1962). Sawyer, C. S., in Gonadotropins (W. H. Freeman and Co., San Francisco, 1964).
2. Lipner, H. J., and Maxwell, B. A., Science, 131, 1737 (1960). Zachariae, F., and Jensen, C. D., Acta Endocrinol., 27, 343 (1958). Nalbandov, A. B., in Control of Ovulation, edit. by Villee, C. A. (Pergamon, New York, 1961).
3. Espey, L. L., and Lipner, H. J., Amer. J. Physiol., 205, 1067 (1963). Espey, L. L., and Lipner, H. J., Fed. Proc., 23, 361 (1964).
4. Reichert, L. E., Endocrinol., 71, 838 (1963).
5. Edelman, I., Bogoroch, R., and Porter, G., Proc. U.S. Nat. Acad. Sci., 50, 1169 (1963); Hamilton, T., ibid., 51, 83 (1964). Talway, G. P., and Segal, S. J., ibid., 50, 226 (1963). Ui, H., and Mueller, G., ibid., 256. Rasmussen, H., Arnaud, C., and Hawker, C., Science, 144, 1019 (1964).