Copy letter from Herbert Rix, to Professor Michael Foster, [Royal Society] 'Dear Sir, The other day two proof plates drawn by Hollick came to hand of which I knew nothing. But I remember you had some correspondence with Prof W.C. Williamson [Professor William Crawford Williamson], & some arrangement (I think of an unofficial character was come to) about plates being drawn in advance for some forthcoming paper. Can you tell me what the arrangement was? I enclose Council minutes. Yours truly H Rix'. 9 July 1891