1. Owens, R. G., Novotny, H. M., and Michels, M., Contr. Boyce Thompson Inst., 19, 355 (1958).
2. Irani, R. J., and Ganapathi, K., Nature, 183, 758 (1959).
3. Foster, J. W., Chemical Activities of Fungi (Academic Press, 1949).
4. Sussman, A. S., and Lingappa, B. T., Science, 130, 1343 (1959).
5. Kojima, H., J. Chem. Soc. Japan, Pure Chem. Sect., 69, 163 (1948); ibid., 73, 377 (1952); Chem. Abstr., 46, 4558 (1952); 47, 4431 (1953).