Referee's report by Cyril Norman Hinshelwood, on a paper 'The induction period of the photochemical reaction between hydrogen and chlorine' by John G A Griffiths and Ronald George Wreyford Norrish Sectional Committee: Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests removing areas of repetition. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 6 July 1934. [July 1934]