Referee's report by Robert Howson Pickard, on a paper 'Critical potentials of hydrogen in the presence of catalytic nickel and copper' by J Hulton Wolfenden Sectional committee: Chemistry Recommended for publication in Proceedings. The paper mainly consists of criticising Ganger's work. As Ganger's paper was published in the American Chemical Society's journal, the paper might be better placed there. [Published in Proceedings of the Royal Society A, 1926]. Endorsed on verso as received 22 December 1925. December 1925