Memorandum from J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Explosion waves and shock waves. VI. The disturbance produced by bursting diaphragms with compressed air' by William Payman and Wilfred Charles Furness Shepherd to William Lawrence Bragg Asks to whom the paper should be sent and if he agrees to pass a favourable report. Bragg replies yes to both questions. [Published in Proceedings of the Royal Society A, 1946]. Endorsed on recto as received 8 April 1940. 5 April 1940