Letter from the Deputy General Secretary, The Royal Institution, 21 Albemarle Street, London W1 to J D Griffith Davies, Assistant Secretary, The Royal Society, Burlington House, London W1 ' Mr Martin has asked me to thank you for your letter of May 29th, and to acknowledge the cheque for £43, being the Royal Society's share on the cost of the Memorial Service to Sir William Bragg. ' 8 June 1942