Copy letter from Herbert Rix, to Professor Edward Albert Schafer, Fellow of the Royal Society 'Dear Sir, I have sent a letter containing a pressing enquiry to Mr W H Thompson addressed to him at the Physiological Laboratory, University College, London, but can get no answer. Can you tell me whether he is still at the laboratory, or give me any clue to his whereabouts? Yours truly, Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 17 April 1894