Calendar: 1966-1967 Page 413

lxxxviii Annual Report of the Delegacy Ph Anderson 'Noise produced by small diameter air jets in high subsonic and supersonic flow Ph Burton 'The energy balance for the comminution of solid particles during milling processes Ph Harry Electrochemical studies of ionic metal carbides Ph Hirst 'Automatic optimum-seeking control applied to quantitative interference microscopy Ph Jeffery 'Pulsating flow through orifices Ph Powell 'An investigation of air ejector systems Ph Suan 'The long-term behaviour of simply supported and continuous concrete subjected to thermal gradient Sc Eng English 'An investigation by the use of small- scale models into the strength of sacks containing granular materials Faculty Notes Professor Η Rose visited the United States and lectured in the Universities of Ohio Utah and California Berkeley and at the Montana and Colorado Schools of Mines and delivered the Warren Lecture at the University of Minnesota With Robinson he presented paper on 'The theory of mixing' to thejoint meeting of the Institution of Chemical Engineers and the American Institution of Chemical Engineers held in London in June Professor Watkins was elected Chairman of the Board of Studies in Chemical Engineering Professor Ross delivered the closing lecture at an international symposium held in London in November on 'Methods of accom- modating movement in pre-stressed concrete structures' He also attended by invitation colloquium at Cornell University June 22nd- 25th on 'The nature of inelasticity in concrete and its structural effects' and presented paper describing some recent research In April Professor Kastner visited the University of Hong Kong and the University of Malaya at Kuala Lumpur in the capacity of external examiner and adviser in Mechanical Engineering for both universities He also visited United College one of the three founda- tion colleges of the new Chinese University of Hong Kong In addi- tion he was consulted about the development and recognition of technician training and craftsman training courses in Hong Kong and