1. Chasis, H., and Smith, H. W. (1938). J. clin. Invest., 17, 347.
2. Cope, C. L. (1933). Ibid., 12, 567.
3. Dole, V. P. (1943). Amer. J. Physiol., 139, 504.
4. Joiliffe, N., and Smith, H. W. (1931). Ibid., 99, 101.
5. Lucks, B. (1946). Mil. Surg., 99, 371.