Copy letter from Robert William Frederick Harrison, to Messrs West, Newman & Company, 54 Hatton Garden, E.C. 'Dear Sirs, Referring to your bill (enclosed) for the Jeffrey Plates, will you kindly send me a separate bill for the £2-10-0 as amount outstanding, and I will send you another cheque. I am, Yours faithfully, Robt Harrison Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 22 July 1902