1. Akagi, M., Oketani, Y., and Takada, M. (1963a). Chem. pharm. Bull., 11, 62.
2. Akagi, M., Oketani, Y., and Takada, M. and Suga, T. (1963b). Ibid. 11, 321.
3. ,, and Yamane, S. (1963c). Ibid, 11, 1216. Any Questions? (1967), Brit. med. J, 4, 342.
4. Cohen, Y., Font du Picard, Y., and Boissier, J. R. (1962). Arch. int. Pharmacodyn, 136, 271.
5. Wepierre, J., Font du Picard, Y., and Boissier, J. R. (1965). Thdrapie, 20, 101.