Referee's report by Alan Sterling Parkes, on a paper 'On the incidence of the breeding season in mammals after transference to a new latitude' by John Ian Robert Russell, 13th Duke of Bedford and Francis Hugh Adam Marshall Sectional Committee: Zoology Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper may have been more suitable for the Proceedings of the Zoological Society, although a previous paper by the same authors has already been published in the Proceedings of the Royal Society, so the current paper should also appear there. 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'] Endorsed on recto as received 9 October 1941. [October 1941]