Members of Symposium 
D. M. MacKay 
First Granada Research Professor of Communication, University of 
Keele, Staffs., since 1960. 
Radar research at Admiralty Signal Establishment, Witley, 1943-46; 
Lecturer, and latterly Reader, in Physics, King’s College, London, 
1946-60. Research into the limitations of high-speed electronic com- 
puters and into the foundations of Information Theory, 1946-50. Rocke- 
feller Fellow in U.S.A., 1951. Since then, research has been chiefly into 
the information-processing organization of the brain, particularly in 
visual perception. At present building up an inter-disciplinary research 
group interested in the brain as a communication system, and the develop- 
ment of artificial mechanisms with “‘brain-like’’ function. 
Publications on electronics, information theory, electroencephalography, 
experimental psychology, and “‘artificial intelligence’’. 
P. B. MEDAWAR 
Director, National Institute for Medical Research, Mill Hill, London, 
since August, 1962. 
Lecturer in Zoology, University of Oxford, 1944; Mason Prof. of 
Zoology, University of Birmingham, 1947-51; Jodrell Prof. of Zoology 
and Comparative Anatomy, University College, London, 1951-62; 
Croonian Lecturer, Royal Society, 1958; Reith Lecturer, 1959; Dunham 
Lecturer, Harvard Med. School, 1960; Former Member of Agricultural 
Research Council and University Grants Committee. Royal Medal of 
Royal Society, 1959; Nobel Prize for Medicine, 1960. 
Publications include: The Uniqueness of the Individual; The Future of Man. 
Scientific papers on growth, ageing, immunity and cellular transforma- 
tions. 
H. J. MuLLer 
Professor of Zoology, Indiana University, Bloomington, Indiana, since 
1945, Distinguished Service Professor since 1953. 
Assoc. Prof. and then Prof. of Zoology, University of Texas, 1920-36; 
Senior Geneticist, Institute of Genetics, Moscow, 1933-37; Research 
Assoc. and then Lecturer, Institute of Animal Genetics, Edinburgh 
University, 1937-40; Research Assoc. and then Visiting Prof., Amherst 
College, 1940-45. Awarded Nobel Prize in Physiology and Medicine 
for “‘discovery of the production of mutations by means of X-rays’’, 1946. 
Foreign Member, Royal Society, 1953. 
Publications include: The Mechanism of Mendelian Heredity (with others) ; 
Out of the Night: a Biologist’s View of the Future; Genetics, Medicine and Man 
(with others). 
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