Copy letter from Theodore E James, to William Turner Thiselton-Dyer, Fellow of the Royal Society, Royal Gardens, Kew 'Will you kindly outline on the enclosed sheet of paper [not attached] the exact size of your lantern slides, as we must alter one or other of our slide carriers to hold them. This must be done before the meeting. I send this note in case you are not bringing them at Council time. Yours truly, T. E. James Clerk R. S. [Royal Society]'. 17 March 1897