Referee's report by William Edward Curtis, on a paper 'Spectroscopic studies of low-pressure flames IV. Measurements of light yield for C2 bands' by Alfred Gordon Gaydon and H G Wolfhard Sectional committee: Physics Recommended for publication in Proceedings. The paper is 'rather speculative in character, with little in the way of definite conclusions'. Isn't competent to express an opinion of the value of the speculations. A chemist should have been invited to referee the paper. [Published in Proceedings of the Royal Society A, 1950]. Date received not given. 1949