Referee's report by John Mellanby, on a paper 'The secretion of protein material in the parasympathetic submaxillary saliva' by G O Langstroth, D R McRae and G W Stavraky Sectional Committee: Physiology Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper is confused and difficult to read, containing excessive amounts of detail and tedious discussion. The method of chemical analysis is good. Experimental data should have been obtained for a greater range of animals. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 31 December 1937 [report form] and 4 May 1937 [letter]. 2 May 1937