Referee's report by John Burdon Sanderson Haldane, on a paper 'The external mechanics of the chromosomes VI—The behaviour of the centromere at meiosis' by Margaret Upcott Sectional committee: Botany Recommended for publication in Proceedings, in full. The paper uses new technical terms such as 'centromere' and 'convergent' and these should be defined. References should be made to other authors on the subject. [Published in Proceedings of the Royal Society B, 1937]. Endorsed on verso as received 11 October 1937. October 1937