Referee's report by Cyril Norman Hinshelwood, on a paper 'Entropies of mixing in certain athermal binary solutions' by Edward Armand Guggenheim Sectional committee: Chemistry Paper reference code: A43 Not recommended for publication: 'The calculations made in this rather lengthy paper do not appear to illuminate the theory of real systems in any definite way and I question whether or not the work is worthy of publication in the Proceedings'. [Published in Proceedings A, 1950]. Date received not given. 19 March 1950