1. Quick, A. J., Amer. J. Physiol., 140, 212 (1943).
2. Nolf, P., Arch. Internat. de Pharmacodyn. et de Therap., 70, 5 (1945).
3. Seegers, W. H., Loomis, E. C., and Vandenbelt, J. M., Arch. Biochem., 6, 69 (1945).
4. Fantl, P., and Nance, M., in the press.
5. Warner, E. D., Brinkhous, K. M., and Smith, H. P., Amer. J. Physiol., 114, 667 (1936).