1. Funaki, S., Proc. Jap. Acad., 34, 534 (1958).
2. Funaki, S., Electrical Activities of Single Cells, 233, edit by Katsuki, Y. (1960).
3. Holman, M. E., J. Physiol., 141, 486 (1958).
4. Bülbring, E., Burnstock, G., and Holman, M. E., J. Physiol., 142, 420 (1958).
5. Goto, M., and Woodbury, J. W., Fed. Proc., 17, 58 (1958).