1. Low, B. W., Cold Spring Harbor Symposia, 14, 77 (1949).
2. Kendrew, J. C., and Perutz, M. F., “Hæmoglobin”, 101 (London: Butterworth, 1949).
3. Sanger, F., Nature, 162, 491 (1949).
4. Crowfoot, D., Proc. Roy. Soc., A, 164, 580 (1938).
5. Ambrose, E. J., and Elliott, A., Proc. Roy. Soc. A, 208, 75 (1951).