Letter from Rudolf Ernst Peierls, on a paper 'The enumeration of graphs in the Feynman-Dyson technique' by C A Hurst, to D C Martin, assistant secretary of the Royal Society Paper reference code: A266 Peierls comments on the difficulty he has in refereeing this paper, and suggests he should return it and another referee consulted, possibly Professor Pryce. He is 'reluctant to make an adverse report on a paper communicated by Dirac', and suggests if he could write to Professor Dirac to put his 'doubts' directly to him. Written at the Department of Mathematical Physics, The University, Edgbaston, Birmingham [England]. [Published in Proceedings A, 1952]. Endorsed on recto as received 24 November 1951. 23 November 1951