Referee's report by George Ingle Finch, on a paper 'On the intensities of electron diffraction rings' by Moses Blackman Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests reducing the number of footnotes by incorporating them into the text. The paper is an important advance on a subject which has received insufficient attention. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 11 July 1939. 10 July 1939