1. Pampiglione, G. (personal communication).
2. Landis, E. M., and Hortenstine, J. C., Physiol. Rev., 30, 1 (1950).
3. Burton, A. C., Handbook of Physiology—Circulation, edit. by Hamilton, W. F., and Dow, P., 1, 85 (Amer. Physiol. Soc., 1962).
4. Yamada, S., and Burton, A. C., J. App. Physiol., 6, 501 (1953).
5. Lassen, N. A., and Ingvar, D. H., Experientia, 17, 42 (1961).