Referee's report by Henry Thomas Tizard, 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'. Makes some minor points on the text for the attention of the author. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 20 November 1935. [November 1935]