Copy letter from Herbert Rix, to Professor Joseph John Thomson, Fellow of the Royal Society 'Dear Sir, Please be good enough to return the paper by Dr Hopkinson & Mrs Wilson, referred to you, so that we may have it in time for the meeting on Thursday afternoon. We will return it to you on Friday morning, if you have not finished with it. Yrs [Yours] truly, Herbert Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 29 May 1894