1. Cox, J. S. G., Fitzmaurice, C., Moss, G. F., and Ricketts, C. R. (unpublished results).
2. Golberg, L., in Iron in Clinical Medicine, edit. by Wallerstein, R. O., and Mettier, S. R., 78 (Univ. California Press, Berkeley, 1958).
3. Fielding, J., and Smith, G. M., J. Clin. Path., 16, 12 (1963).
4. Golberg, L., in Iron in Clinical Medicine, edit. by Wallerstein, R. O., and Mettier, S. R., 80 (1958).
5. Pharmacology Department, Fisons Pharmaceuticals, Ltd. (unpublished results).