Copy letter from Robert William Frederick Harrison, to Dr Alfredo Antunes Kanthack, Pathological Laboratory, New Museums, Cambridge 'Dear Dr. Kanthack, Many thanks for your note acknowledging the receipt [sic] of the £50, but I shall be much obliged if you will, for the satisfaction of the auditors, let me have the enclosed formal receipt back duly signed. Believe me, Very truly yours, Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 25 October 1897