Referee's Report by Harold King on a paper 'Chemical constitution and trypanocidal activity' by G M Dyson, T H Fairbrother, F A Mason and A Renshaw Paper reference code: B.25 'This paper should not be published by the Society since it is of insufficient merit both from the chemical aspect and from the biological'. Criticises the overall writing of the paper, as different authors have contributed different sections and contradicted each other at points. Provides a list of specific criticisms with page references, but concludes that 'the paper is most unsatisfactory'. Suggests that certain sections could be presented to the Journal of Chemical Industry for publication instead. [Not published]. Received 20 April 1938 13 April 1938