Referee's report by William George Penney, Baron Penney of East Hendred, on a paper 'The structure of the reaction zone in a flame' by Samuel Francis Boys and J Corner Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper would also be suitable for the Faraday Society or the Journal of Chemical Physics. The paper was of great interest during the war, and quoted often in secret reports, so is glad to see the paper released for open publication. [Published in the 'Proceedings of the Royal Society of London'] No received date. 17 October 1948