Referee's report by Hamilton Hartridge, on a paper 'Experiments on muscle haemoglobin in vivo; the instantaneous measurement of muscle metabolism' by G A Millikan Sectional committee: Physiology Recommended for publication in Proceedings, in full. The paper is a 'very excellent one'. [Published in Proceedings of the Royal Society B, 1937]. Endorsed on verso as received 9 April 1937. April 1937