Referee's report by Cecil Drummond Ellis, on a paper 'On the variation of the intensity of K and L series radiation with tube potential' by Eric Henry Stonely Burhop Sectional Committee: Physics Not recommended for publication in the 'Proceedings of the Royal Society of London'. The method and results are careful and convincing. Refers to work of Hans Albrecht Bethe. Suggests rewriting and retitling the paper, and provides an outline for this. [Published in the 'Proceedings of the Royal Society of London' A, 1934 as 'The probability of inner shell ionization of atoms by electron impact'] Endorsed on verso as received 1 January 1934. [January 1934]