Copy letter from Robert William Frederick Harrison, to Messrs John J Griffin & Sons Limited, 20-26 Sardinta Street, Lincoln's Inn Fields, W.C. 'Dear Sirs, I have been asked by Dr. A. Gamgee., F.R.S. to remit you the sum of £9-19-4 in settlement of the enclosed a/c [not enclosed]. Please send receipt to me. I am, Yours truly, Robert Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 10 February 1902