Referee's report by Charles Drummond Ellis, on a paper 'The ß-radiations of uranium X1 and uranium X2' by J S Marshall Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests the paper could be considerably shortened. However, due to the interest of the work, it could also be published in its present form. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 14 September 1939. [September 1939]