Letter from Peter Brian Medawar, on a paper 'Morality among voles (microtus agreatis) at Lake Vyrnwy, Montgomeryshire in 1936-9' by D Chitty, to D C Martin, assistant secretary of the Royal Society Paper reference code: B64 Medawar writes: 'Dear Martin, I return herewith Chitty's manuscript on voles with a copy of the letter in which he explains how he has met the suggestions and criticisms of the referees. I believe he has conscientiously met their objections and hope that the paper may now be accepted for publication. Yours sincerely, P B Medawar'. Written at University College London, Department of Zoology, Gower Street [England]. [Published in Philosophical Transactions B, 1952]. Endorsed on recto as received 21 January 1952. 19 January 1952