Referee's report by James Gray, on a paper 'On the physiology of respiration in fishes I. On the bionomics, structure and physiology of respiration in an esturine air-breathing Gobioid fish' by B K Das Sectional Committee: Zoology Not recommended for publication in the 'Proceedings of the Royal Society of London'. Finds the author unacquainted with the most recent research. The observations are not new, but might form the basis for a more intensive study. [Not published] Endorsed on verso as received 29 December 1933. [December 1933]