Letter from Howard Walter Florey to W Lawrence Bragg, Royal Institution, Albemarle Street, London Thanks for letter about Russian Academicians - says they have postponed their visit twice and now have shortened time they are spending in Britain - still does not expect them to arrive when they say - tells Bragg to make arrangements with D C Martin about Davy Faraday Laboratory - perhaps Bragg's suggestion about Sisakyan can be carried out. 30 December 1964