Referee's report by Charles Galton Darwin, on a paper 'The photoelectric absorption of Y-rays in heavy elements' by H R Hulme, J McDougall, R A Buckingham and Ralph Howard Fowler Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. Finds the criticism of the previous referee irrelevant. Suggests some improvements that could be made to the paper, including adding a 'carefully written introduction' for the benefit of general readers of physics, clearer explanation of the criticisms of other works and fuller explanation of the authors' previous papers, without assuming the reader has access to them. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 4 December 1934. [December 1934]