Referee's report by William Cecil Dampier Whetham, on a paper 'Activity-measurement by the partition method.—I' by Bernard Cavanagh Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests further explanations, to make the paper more accessible to 'the ordinary scientific reader'. [Published in the 'Proceedings of the Royal Society of London' A, 1924] Endorsed on verso as received 25 April 1924. [April 1924]