1. ANDERSON, J. R., GOUDIE, R. B., GRAY, K. G., and TIMBURY, G. C. (1957), Ibid., i, 1123.
2. BEARE, R. L. B. (1958), Brit. med. J., i, 480.
3. BELYAVIN, G., and TROTTER, W. R. (1959), Lancet, i, 648.
4. COLOVER, J., and GLYNN, L. E. (1958),.7. Immunol., i, 172.
5. DONIACH, D., ROITT, I. M., and HUDSON, R. V. (1959), Rev. Maladies du Foie. In the press.