Referee's report by Alfred Charles Glyn Egerton, on a paper 'The influence of pressure on the spontaneous ignition of inflammable gas-air mixtures. I.—Butane-air mixtures' by Donald T A Townend and M R Mandlekar Sectional Committee: Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper presents new information about a critical pressure region, and are in a rush to publish. 'I happen to be working on very similar lines, in fact we are bound to clash to some extent - but I hope to the good of the subject!' [Published in the 'Proceedings of the Royal Society of London' A, 1933] Endorsed on verso as received 11 May 1933. [May 1933]