Copy letter from Robert William Frederick Harrison, to Messrs Newton & Company, 3 Fleet Street, E.C. 'Dear Sir, We are desirous of having a case for the microscopic attachment and sundry fittings which you recently supplied for the Society's meeting. It need not be an expensive one as it is simply intended as a safe repository for the apparatus when not in use. Please be good enough to acquaint me with the probable cost of such a case in painted seal. I am, yrs [yours] truly, Robt Harrison Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 3 February 1897