Referee's report by Marcus Laurence Elwin Oliphant, on a paper 'X-ray electrons expelled from metals by silver Ka1 radiations' by C J Birkett Clews and Harold Roper Robinson Sectional committee: Physics Recommended for publication in Proceedings. It is an extension of a paper previously published in Proceedings. Contains extra question - 'Is there any information contained in the paper which likely to be of value to the enemy?' Referee replies no. [Published in Proceedings of the Royal Society A, 1940]. Endorsed on verso as received 11 June 1940. June 1940