Copy letter from Robert William Frederick Harrison, to Professor Charles Scott Sherrington, Fellow of the Royal Society 'Dear Professor Sherrington, I much regret to find that through a misunderstanding in the office the manuscript of your paper "On the Posterior Roots of some Spinal Nerves: Part II.", has not been sent to you before this. I am having it despatched to you by to-day's post together with the Raffini paper. I am, yours faithfully, Robt Harrison Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 10 February 1897