Copy letter from Sir Henry Thomas Tizard, to Professor Francois Antoine Lacroix, Institut de France, Academie des Sciences, Paris 'Dear Professor Lacroix, I have been asked by the President and Council of the Royal Society to forward to you a copy of the Record which has been signed by the President, and to ask you if you will be so kind as to present this to the Academie des Sciences. Yours sincerely, Foreign Secretary R.S [Royal Society]' 8 February 1945