1. Jungner, G., Acta Physiol. Scand., 10, Supp. 32 (1945).
2. Pedersen, K. O., in Svedberg and Pedersen, "The Ultra-centrifuge", 443 (Clarendon Press, Oxford, 1940).
3. Greenstein, J. P., "Advances in Protein Chemistry", 1, 220 (1944).
4. Kahler, H., J. Phys. Coll. Chem., 52, 676 (1948).
5. Hammarsten, E., Biochem. Z., 144 (1924).