Referee's report by Thomas Ralph Merton, on a paper 'Fluorescent emission of the mercury line 2537 A at pressures between 10-3 and 10-1 mm' by Peter Pringsheim and O D Saltmarsh Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper is an interesting contribution to the subject. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 30 November 1935. [November 1935]