1. Albert, A., Nature, 172, 201 (1953).
2. Noyes, A., Z. physikal. Chem., 11, 495 (1893).
3. Albert, A., Biochem. J., 54, 646 (1953).
4. Albert, A., Biochem. J., 47, 531 (1950); 50, 690 (1952).
5. Albert, A., Rubbo, S. D., Goldacre, R. J., and Balfour, B., Brit. J. Exp. Path., 28, 69 (1947). Rubbo, S. D., Albert, A., and Gibson, M., ibid., 31, 425 (1950). Albert, A., Gibson, M., and Rubbo, S., ibid., 34, 119 (1953).