Referee's report by Otto Fritz Meyerhof, on a paper 'Morphogenesis and metabolism: studies with the cartesian diver ultramicromanometer IV. Respiratory quotient of the regions of the amphibian gastrula' by Joseph Needham, E J Boell and Henri Koch Sectional committee: Physiology Recommended for publication in Proceedings. The results seem reliable. The paper could be shortened. [Published in Proceedings of the Royal Society B, 1939]. Endorsed on verso as received 1939. 1938