Copy letter from Archibald Geikie, to Professor Stanislao Cannizzaro, Foreign Member of the Royal Society 'Sir, I have the pleasure to inform you that the President and Council of the Royal Society have awarded to you the Copley Medal for your contributions to Chemical Philosophy, especially for your application of Avogadro's theory. I am, your obedient servant, Arch Geikie For. Soc. RS. [Foreign Secretary, Royal Society]'. 5 November 1891