Copy letter from Herbert Rix, to Professor Willy Kühne, Univeritat, Neidelberg 'Dear Sir, Herewith enclosed I send you by order of the Treasurer a cheque for £44-13s-8d [44 pounds, 13 shillings and eight pence] due to you from the Croonian Lecture Fund. Kindly let me have a receipt for the same. I am, yours faithfully, Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 15 December 1888