Calendar: 1971-1972 Page 451

lxxvi Annual Report of the Delegacy of Cremona transformations' and on Ά theorem of Malfatti and Steiner' to the London Geometry Seminar and on 'Enumerative geometry' to Sussex University Geometry Seminar Postgraduate lecture courses in the University of London were given by Dr Erdos on representation theory in functional analysis Professor Frohlich on topics in commutative algebra Professor Higgins on categories and universal algebra and Professor Pirani on introduction to general relativity The department was pleased to have working in it during the year Professor Arnowitt from North Eastern University Boston Professor Yoshiomi Furuta of Kanazawa University Japan Dr Krishna Rao from Sardar Patel University Gujarat India and Pro- fessor Stachel of Boston University Dr Jules Leroy of the Universite Libre de Bruxelles paid short visit to the department Among many other visitors were Dr Herman Rutgers Professor Komar Yeshiva University Pro- fessor Martinet Bordeaux Professor Ε Newman Pittsburgh Professor Pippard Cavendish Laboratory Cambridge Professor Abraham Robinson Yale Professor Sachs Buffalo Professor Sweedier Cornell and Dr Urbantke Vienna two-day seminar on relativity and related topics was attended by about 150 participants from the United Kingdom and Western Europe DEPARTMENT OF PHYSICS Number of Students Sc Broad based 53 Sc Ancillary subject 41 Sc Major subject 80 Postgraduate 37 Departmental Notes After 36 years of teaching and research in this department Professor Champion retired at the end of the session see Retirements xx His services to the College and the University have been of the highest order and his colleagues and former research students wish him long and happy retirement The department had very active year wider range of under- graduate courses was introduced more than 50 research papers were published and 60 conference and other lectures were given outside the