Copy letter from Herbert Rix, to Dr William Marcet, Fellow of the Royal Society 'Dear Dr Marcet, Will you kindly return without delay the volume which you borrowed on April 11, 1888 - Angus Smith "Air & Rain". We shall probably be able to let you have it back without the lapse of any very long interval. Yours faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 2 May 1889