Copy letter from Herbert Rix, to Messrs Drake & Gorham, 2 Princes Mansions, Victoria Street, S.W. 'Dear Sirs, I understood from Mr Arthur Keen that a deduction of 10% was to be made upon your account. I find, however, that I misread his letter, and that the deduction was only for 10/-. The inclosed cheque for £52-13-6 was drawn under this misapprehension. Will you kindly place it to our account and include the balance in your account next time? Yours truly, H Rix Asst. Sec. RS. [Assistant Secretary, Royal Society]'. 9 April 1894