Referee's report by Nevil Vincent Sidgwick, on a paper 'The electronic structure of some polyenes and aromatic molecules. IV. The nature of the links of certain free radicals' by C A Coulson Sectional committee: Chemistry He cannot express a definite opinion on the paper. If the results are sound, they will be of much interest to chemists. [Published in Proceedings of the Royal Society A, 1938]. Endorsed on verso as received 9 December 1937. 5 December 1937