Referee's report by Alfred Charles Glyn Egerton, on a paper 'The influence of pressure on the spontaneous ignition of inflammable gas-air mixtures - IV—methane-, ethane-, and propane-air mixtures' by Donald T A Townend and E A C Chamberlain Sectional Committee: Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests indicating the accuracy of the observations, and measured points shown on the curves. The matter is not as simple as the authors imply, and they ignore some of the kinetics. Refers to work of Backstrom and Leo Ubbelohde. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 28 October 1935. 23 October 1935