Referee's report by Edward Arthur Milne, on a paper 'The velocity of sound in general relativity, with a discussion of the problem of the fluid sphere with constant velocity of sound' by A R Curtis Sectional committee: Mathematics Not recommended for publication. The Proceedings are an unsuitable place for the paper to be published and it should instead be published in Mathematical Society journal. It will only be of interest to a select number of specialists. [Published in Proceedings of the Royal Society A, 1950]. Date received not given. 16 June 1949