Calendar: 1974-1975 Page 464

Annual Report of the Delegacy lxxxiii Switzerland and to the conference on algebraic number theory in Oberwolfach Germany He also lectured at the number theory colloquium in the University of Cambridge and the Algebra Collo- quium in the University of London Professor Frohlich gave series of postgraduate lectures in the University of London on locally free modular and L-functions He was awarded an research grant for research project in arithmetic of orders Under this grant Profes- sor Reiner and Ullom of the University of Illinois Urbana and Professor Martinet of the University of Bordeaux spent several months in the Department as Senior Visiting Fellows Professor Higgins gave Colloquium lecture at University College Bangor and also at the University of Zambia while visiting as external examiner He also gave postgraduate course at the University of London on Hubert's Fifth Problem Professor Kilmister gave three Gresham lectures on 'Poly- hedra' and three on 'The Mathematics of trade-cycles why is sustained growth difficult' He lectured to the Mathematics Department at York University on' Continuous field theories from discrete point of view' to Bristol and Bath branch of the Mathematical Association on Sixth form applied mathematics' at the Shell Centre University of Notting- ham on 'How young should we begin special relativity He also gave lecture at Chelsea Centre for Science Education on 'non-standard analysis' Professor Pirani spent the first semester as Distinguished Professor of Physics and Research Fellow in Philosophy of Science Boston University Professor Taylor gave lectures at the Universities of Leicester Oxford and York He lectured at the Thames Mathematics Teachers Centre Newcastle-upon-Tyne Polytechnic British Association for Young Scientists Midlands British Association The Ockenden Venture Chelsea College British Psychological Society Welsh Branch He was organiser of the International Summer School on the Physics and Mathematics of the Nervous System International Centre for Theoretical Physics Trieste August 21st31 st He also gave numerous radio and television appearances Dr Davies gave several radio talks on the subject of 'Time' and gave Cosmology talk to the British Association Annual Conference at Canterbury Dr Erdos gave talk to the Functional Analysis Seminar Oxford University on 'Maximal Abelian algebras of operators' He