Copy letter from Herbert Rix, to Professor Michael Foster, [Fellow of the Royal Society] 'Dear Sir, You will remember to write a letter to Raymon y Cayal. I suppose no letter will be necessary to the Congress of Applied Chemistry? I have written none. You will remember also to write to Dr Ferrier about Boyce. Everything else in the minutes I have attended to. Yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 9 December 1893