Referee's report by Cyril Norman Hinshelwood, on a paper 'On the rate of oxidation of monolayers of unsaturated fatty acids' by Arthur Hentry Hughes and Eric Keightley Rideal Sectional Committee: Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. The method is interesting and novel. [Published in the 'Proceedings of the Royal Society of London'A, 1933] Endorsed on verso as received 14 February 1933. [February 1933]