Referee's report by David Keilin, on a paper 'Phenolases and melanogenesis in the coelomic fluid of the echinoid Diadema antillarum Philippi' by F W Jacobson and Norman Millott Sectional committee: Physiology Paper reference code: B51 Recommended for publication in the Proceedings. Keilin remarks the authors make an attempt a biochemical study of melanogenesis in Echinoderms, though they are not familiar with modern quantitative biochemical methods applied to this field. [Published in Proceedings B, 1953]. Date received not given. 7 November 1952