Referee's report by Archibald Vivian Hill, on a paper 'On the balloon-like structure of the mammalian erythrocyte' by Eric Ponder Sectional Committee: Physiology Recommended for publication in the 'Proceedings of the Royal Society of London'. The mathematical section is due to Charles Galton Darwin, who should be asked to referee that part of the paper. [Published in the 'Proceedings of the Royal Society of London' B, 1924] Endorsed on verso as received 7 August 1924. [August 1924]