1. Nishimura, S., J. Agric. Chem. Soc. Japan, 6, 160, 485, 987 (1930); 7, 29, 388 (1931); Biochem. Z., 225, 264 (1930); 232, 156; 237, 133 (1931).
2. Maruo, B., and Kobayashi, T., J. Agric. Chem. Soc. Japan, 23, 115, 120 (1949); Chem. Abstr., 44, 3053e (1950).
3. Maruo, B., Kobayashi, T., Tsukano, Y., and Yamada, N., J. Agric. Chem. Soc. Japan (in the press).
4. Peat, S., Bourne, E. J., and Barker, S. A., Nature, 161, 127 (1948).
5. Maruo, B., Kobayashi, T., and Tsukano, Y., J. Agric. Chem. Soc. Japan (in the press).