1. Gokhale, S. K. and Singh, I.Proc. Ind. Acad. Sci., 1945,21, 202.
2. Haurowitz, F.Chemistry and Biology of Protein, Academic Press, New York, 1950.
3. Hodgkin, A. L. and Katz, B.J. Physiol.,108, 37, Singh, I.Ibid., 1938a,91, 398.
4. —, 1938b,92, 232.
5. —, 1939,96, 1.