Referee's report by Arthur Hutchinson, on a paper 'The structure and formula of 12-phosphotungstic acid' by J F Keggin Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests omitting the historical introduction, which can be replaced with a brief introduction and short bibliography. Suggests only describing the apparatus once. [Published in the 'Proceedings of the Royal Society of London' A, 1934] Endorsed on verso as received 4 October 1933. [October 1933]