Copy letter from Robert William Frederick Harrison, to Professor Edwin Ray Lankester, Fellow of the Royal Society 'Dear Professor Lankester, Of the days you offer for the Tropical Diseases Committee meeting, Tuesday the 13th seems most generally convenient, and the notices are going out accordingly for that day at 3.30 o'clock, the hour fixed by resolution. I am, very truly yours, Robt [Robert] Harrison Asst. [Assistant] Secretary R.S. [Royal Society]'. 5 February 1906