Referee's report by Major Greenwood, on a paper 'On the interaction between several species of hosts and parasites' by V A Bailey Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. Finds the investigation interesting, but is not skilled as a pure mathematician to comment on those parts of the paper. Suggests seeking the opinion of Ronald Aylmer Fisher or Edmund Taylor Whittaker. [Published in the 'Proceedings of the Royal Society of London' A, 1933] Endorsed on verso as received 9 May 1933. [May 1933]