Second referee's report by Cyril Norman Hinshelwood, on a paper 'Experiments on heavy hydrogen - V—The elementary reactions of light and heavy hydrogen. The thermal conversion of ortho-deuterium and the interaction of hydrogen and deuterium' by Adalbert Farkas Sectional committee: Chemistry The authors have informed him of their proposed alterations. He thinks that although the Society may object to this on grounds of expense, he sees no objection on scientific grounds to their alterations. [Published in Proceedings of the Royal Society A, 1935]. Endorsed on verso as received 16 July 1935. 15 July 1935