Calendar: 1969-1970 Page 451

Annual Report of the Delegacy lxxxix Ph Lykakis 'Studies on the immunological responses of poikilothermic vertebrates Ph Clarkson 'Studies on nucleic acid and protein synthesis in relation to pattern regulation in Hydra Departmental Notes Professor Arthur lectured on aspects of human ecology at Queen Mary College University College Cardiff and the University College of Wales Aberystwyth on marine pollution by oil and surfac- tants at symposium in Orielton on progress in ecological research in the Thames to the Clean Thames Consultation Panel and on tick- borne diseases in Ghana He presided over the section dealing with Medical Entomology and Acarology at the thirteenth international Congress of Entomology at Moscow He also visited the University of Ife Nigeria as an external examiner He was elected Dean of the Faculty of Science for the session 1968-69 Professor Dawes attended conference on fascioliasis during May at the Polish Academy of Sciences Warsaw and read research paper Dr Cox Secretary of the British Society for Parasitology read papers on immunity to blood parasites at the Society's autumn meeting and on immunity to Protozoa at their spring meeting He also read papers on immunity to malarial parasites at symposium on home-based malarial research in London on mammalian blood para- sites to the British Mammal Society and on the fine structure of malarial parasites at Bedford College and University College He chaired session on Protozoa at the 150th meeting of the Society for Experimen- tal Biology at Bristol Dr Pyc delivered lectures to the CIBA Foundation Symposium on 'Hearing mechanisms in vertebrates' the Institute of Electrical and Radio Engineers Royal Holloway College Biology Society the Guthrie Society Westminster Hospital Iliffe Technical Publications Physics Society Acoustics Group joint symposium on 'Ultrasonics for industry' University College of Wales Old Students' Association London Branch Croydon Natural History Society Sub-department of Animal Behaviour Madingley Cambridge Bryanston School Science Society Dr Healey was invited to give paper at the joint International Biological Programme-UNESCO Symposium on 'Energy flow in