Referee's report by Edmund Taylor Whittaker, 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', if a biological referee also recommends publication. Gives an opinion 'with difference' and feels a better opinion would come from someone with more experience with biology. Has checked the mathematics and finds it sound. [Published in the 'Proceedings of the Royal Society of London' A, 1933] Endorsed on verso as received 1 June 1933. [June 1933]