Copy letter from Herbert Rix, to Sir William Turner, Fellow of the Royal Society 'Dear Sir William, Dr Foster wrote to you in July last year asking you to undertake an obituary notice of Sir W. [William] Aitken, and, to the best of my belief, you consented. We have never received the manuscript. Can you tell me when we may expect it? I am, yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 15 December 1893