Referee's report by William Bate Hardy, on a paper 'Muscular exercise, lactic acid, and the supply and utilisation of oxygen.—Parts IV-VI' by Archibald Vivian Hill, C N H Long and H Lupton Sectional Committee: Physiology Recommended for publication in the 'Proceedings of the Royal Society of London'. [Published in the 'Proceedings of the Royal Society of London' B, 1924] No received date. [1924]