Referee's report by Harold King, on a paper 'Molecular structure in relation to oestrogenic activity: derivatives of 4 :4’-dihydroxydiphenylmethane' by N R Campbell Sectional committee: Physiology Recommended for publication in Proceedings. Some small modifications are required. 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]. Date received not given. 9 September 1940