Referee's report by James Charles Philip, on a paper 'The influence of hydrogen ion concentration on the adsorption of weak electrolytes by pure charcoals' by Harold John Phelps and Rudolph Albert Peters Sectional committee: Chemistry Not recommended for publication in Proceedings, in it's present form. The paper is unconvincing and the results are less decisive than the authors think. The evidence it provides does not warrant the conclusions drawn from it. [Published in Proceedings of the Royal Society A, 1929]. Endorsed on verso as received 12 March 1929. March 1929