1. Grundy, H. M., Simpson, S. A., and Tait, J. F., Lancet, 262, 122 (1952).
2. Simpson, S. A., and Tait, J. F., Endocrin. (in the press).
3. Zaffaroni, A., Burton, R. B., and Keutmann, E. H., Science, 111, 6 (1950).
4. Morton, R. A., “The Application of Absorption Spectra”, 47 (London, 1942).
5. Burton, R. B., Zaffaroni, A., and Keutmann, E. H., J. Biol. Chem., 188, 763 (1951).