Referee's report by Cyril Norman Hinshelwood, on a paper 'On the mass rate of reactions in solids' by R S Bradley, James Colvin and J Hume Sectional Committee: Chemistry Not recommended for publication in the 'Proceedings of the Royal Society of London'. The subject is interesting and the methods satisfactory. However, does not think the experiments are sufficiently extensive to validate the formulae. [Published in the 'Proceedings of the Royal Society of London' A, 1932] Endorsed on verso as received 4 May 1932. [May 1932]