Referee's report by Rudolph Albert Peters, on a paper 'The relations between surface pH, ion concentrations and interfacial tension' by James Frederic Danielli Sectional Committee: Zoology Recommended for publication in the 'Proceedings of the Royal Society of London'. Makes some minor notes on the text and calculations. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 8 September 1936. Response from the author, comments on the criticisms of the referees. Is familiar with the work of John Arthur Wilson, but decided to hold back on referencing until the paper on oil-water interface was published. Endorsed on recto as received 24 September 1936. 18 September 1936