Rheumatic fever and the blood groups.

Figs. 1. 4, and 5 were produced in the Department of Medical Illustration in Makerere University College Medical School: Figs. 2 and 3 were produced by Dr. E. H. Williams, a companion in the road safari, and have been included by permission of the Editor of the British Jouirnal of Cancer. REFERENCES Burkitt, D. (1958). Brit. J. Surg., 46, 218. (1962a). Postgrad. med. J., 38, 71. (1962b). Ann. roy. Coll. Surg. Engl., 30, 211. -(1962c). Nature (Lond.), 194, 232. (1962d). Brit. J. Cancer. In press. and Davies, J. N. P. (1961). Med. Press, 245, 367. and O'Conor, G. T. (1961). Cancer, 14, 258. Church, R. J. H. (1960). West Africa, 2nd ed., pp. 54, 482, 514. Longmans, London. Marneffe, J. (1958). Ann. Soc. belge me'd. trop., 38, 681. O'Conor, G. T. (1961). Cancer, 14, 270. and Davies, J. N. P. (1960). Pediatrics, 56, 526.