Calendar: 1968-1969 Page 424

lxxxii Annual Report of the Delegacy Argonne National Laboratory and at Royal Holloway College He also read paper at the Gordon Conference on Chemistry and Physics of Isotopes at Crystal Mountain Washington In collaboration with Dr Rochester he contributed paper to the Chemical Society Symposium on Stereochemistry and Reaction Mechanism held in Hull Mr Hulme Dr Hall and Dr John each spent terim as visiting lecturers at the University of Ife Nigeria under the VISTA scheme for assisting university teaching in underdeveloped countries Dr Robertson gave lectures at the University of Birmingham Salford and Warwick at the Welsh College of Advanced Technology Sir John Cass College Regent Street Polytechnic and at Hatfield College of Technology In September 1967 he gave paper at special discussion meeting on Field Ion Mass Spectrometry held at the Fritz Haber-Institut der Max-Planck-Gesellschaft Berlin and with Mr Williams paper at the international Mass Spectrometry Conference at the Technical University Berlin Dr Ε Willhofft gave two papers with Dr Robertson one at meeting in Munich ini September organised by the Propulsion and Energetics Panel of the Advisory Group for Aerospace Research and Development and the other at symposium on Mass Spectrometry at Enfield College of Technology in July Mr Williams presented paper with Dr Robertson at the Physical Electronics Conference of the American Physical Society held at the Massachusetts Institute of Technology Dr Stirling lectured at the University of Ken at Royal Holloway College and to the Dyestuffs Division of Imperiail Chemical Industries He also contributed to symposia on Stereochemistry at the John Dalton College of Technology Manchester and on Small Ring Compounds at Louvain Dr Satchell lectured at the University of Essex Mr Hulme lectured at Royal Holloway College and Dr Davies at the Univer- sity of Leicester Dr Perkins spent short period at the University 0£ Grenoble under the auspices of the British Council He also gave lectures in Marseilles and Paris as well as at University College Cardiff and Sir John Cass College Dr Nicholas lectured at the symposium on Advanced Topics in Gas Kinetics held at Imperial College and took part in conference on Gas Kinetics held at University College Swansea Dr Stirling Dr Davies Dr Perkins and Dr Hall presented papers