Referee's report by Vernon Herbert Blackman, on a paper 'The growth of nodule bacteria in the expressed juices from legume roots bearing effective and ineffective nodules' by H K Chen, Hugh Nicol and Henry Gerard Thornton Sectional committee: Botany Recommended for publication in Proceedings. References to illustrations should be modified.The word 'ineffective' is sometimes written in inverted commas and sometimes not - these should only be employed in the first use of the word. The heading of two of the tables could be changed. Contains extra question - 'Is there any information contained in the paper which likely to be of value to the enemy?' Referee replies no. [Published in Proceedings of the Royal Society B, 1940]. Endorsed on verso as received 16 July 1940. July 1940