Obituary--Prof. J. F. Heremans.

We sincerely regret to have to report the death of Professor Joseph F. Heremans on October 29th, 1975, at the age of 48. He was Professor of Internal Medicine and of Immunochemistry at the University of Louvain, Brussels and Director of the Department of Experimental Medicine at the new International Institute of Cellular and Molecular Biology, Brussels, of which he was a founder member. He had also been an active member of the Editorial Board of European Journal of Immunology since its founding in 1970. As one could always depend upon his clever but fair criticism, he has done a great deal to help the development of the journal. We are extremely grateful to have had him as a colleague, coworker and friend.