1. 1) Miyake, I., Naito, H., and Tsunoda, H.,: Beikoku Riyo Kenkyujo Hokoku, 1 (1940).
2. 2) Uraguchi, K.,: Folia Pharmacol. Japon., 34, 2 (1942).
3. 3) Kobayashi, Y., and Uraguchi, K.,: Nanpo Kagaku Kenkyujo Hokoku, 1 (1942).
4. 4) Torikai, T.,: Nihon Shokakibyo Gakkai Zasshi, 41, 9 (1942).
5. 5) Uraguchi, K.,: Nisshin-Igaku, 34, 3, 4 (1947); 35, 4 (1948); 36, 1(1949); 37, 8 (1950); 42, 9, 10, 12 (1955).