Copy letter from Robert William Frederick Harrison, to Professor Edward Alfred Minchin 'Dear Prof. [Professor] Minchin, Sleeping Sickness Investigation With reference to your letter of October 16th., on the subject of the grant of £75 for working out the Uganda material, we sent you, on May 8, 1906, a cheque, on account, for £25. On March 10, 1907, we sent you a further cheque for £30. The vouchers received from you are for £26, payment to Miss Thomson, and £1. 18s. payment to Mr Brook-Greaves. I am, faithfully yours, Robt [Robert] Harrison Assistant Secretary R.S. [Royal Society]'. 25 October 1907