Referee's report by Thomas Ralph Merton, on a paper 'On selective absorption by luminous mercury vapour' by E P Metcalfe and B Venkatesachar Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests the paper be held off until the further work of the authors is complete, to form one comprehensive paper rather than a series of short ones. Corrects the spelling of 'Stansfield'. [Published in the 'Proceedings of the Royal Society of London' A, 1924] Endorsed on verso as received 12 January 1924. [January 1924]