Referee's report by John Zachary Young, on a paper 'The thickness of the myelin sheaths of normal and regenerating peripheral nerve fibres' by F K Sanders Sectional committee: Physiology Recommended for publication in Proceedings. The work of Rexed should be referred to in the paper. The statistical methods appear to be suitable but he is not competent enough to comment on them. [Published in Proceedings of the Royal Society B, 1948]. Endorsed on recto as received 14 August 1947. 14 August 1947