Copy letter from Herbert Rix, to Edward Bagnall Poulton, Fellow of the Royal Society 'Dear Mr Poulton, We want your lantern slides for June, but we want it for May as well, and Dr Foster bids me write & ask whether you cannot give them at both soirées. We shall send you a schedule to fill up, but I send this line in advance. Yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 19 April 1894