Copy letter from Herbert Rix, to William Heinemann, 21 Bedford Street, W.C. 'Dear Sir, My attention has been drawn to an advertisement of your books in "Nature", in one of which Dr A.B. Griffiths is described as "F.R.S" [Fellow of the Royal Society]. Dr Griffiths has no claim to these letters & I must beg you to have the advertisement corrected; and if his name so appears on the title-page to have a new title printed. I believe O'Griffiths is an F.R.S.E [Fellow of the Royal Society of Edinburgh] and that has perhaps given rise to the misprint. Yours truly Herbert Rix'. 9 October 1891