Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The quenching of the resonance radiation of sodium' by W MacF Smith and Ronald George Wreyford Norrish Sectional committee: Physics Recommended for publication in Proceedings. The experimental part seems good, but he isn't acquainted with the aspects of the non-theoretical parts. 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 4 July 1940. July 1940