Referee's report by William Lawrence Bragg, 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 [Referee has not completed the form] [Published in the 'Proceedings of the Royal Society of London' as 'The probability of inner shell ionization of atoms by electron impact' A, 1934] Endorsed on verso as received 1 December 1933. [December 1933]