Letter from Howard Walter Florey to D Keilin, Molteno Institute, Cambridge Is forwarding for signature van Heyningen's certificate (of candidature for Fellowship of Royal Society) - think van Heyningen would feel very badly if he were never put up for election - candidates have less than a 1 in 10 change of getting in any one year - competition amongst biochemists is quite fierce - comments on this - possible van Heyningen will get in eventually. 1 June 1960