Referee's report by John Desmond Bernal, on a paper 'The structure of the walls of parenchyma in avena coleoptiles' by Reginald Dawson Preston Sectional committee: Botany Recommended for publication in Proceedings. The method doesn't appear to be entirely certain and modifications could be made to make it more established. This doesn't need to be added to the current paper, as it could be published in a subsequent communication. [Published in Proceedings of the Royal Society B, 1938]. Endorsed on verso as received 21 March 1938. March 1938