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Professor John R. Helliwell is the first recipient of the `Professor K. Banerjee Endowment Lecture Silver Medal' of the Indian Association for the Cultivation of Science (IACS), and which was awarded to him after his lecture entitled `New opportunities in biological and chemical crystallography' given at the IACS in Calcutta on the 19 September 2000. An article based on his lecture is to appear in the Indian Journal of Physics.