Second referee's report by Charles Galton Darwin, on a paper 'The ionised hydrogen molecule' by Alan Herries Wilson Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. The inclusion makes the paper more satisfactory. Does not agree with the conclusions, but this is a first step in the investigative process. [Published in the 'Proceedings of the Royal Society of London' A, 1928] Endorsed on verso as received 14 February 1928. [February 1928]