Referee's report by Alan Sterling Parkes, on a paper 'Ovarian stimulation by oestrogens: Effects in immature hypophysectomized rats' by P C Williams Sectional Committee: Physiology Recommended for publication in the 'Proceedings of the Royal Society of London'. Generally such papers are more suited for a specialist journal such as the Journal of Endocrinology, but the present paper is of enough general interest for the Proceedings. 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 the 'Proceedings of the Royal Society of London'] No received date. [1943]