Copy letter from Robert William Frederick Harrison, to Charles Chree, Fellow of the Royal Society 'Dear Sir, I enclose you a cheque for £221-10-7 being the half-yearly interest under the Gassiot Trust, and I shall be obliged by a receipt. There is at present no return of income tax to pay over. I am, Yours faithfully, Robt Harrison Assist. Sec. R. S. [Assistant Secretary, Royal Society]'. 20 July 1898