Referee's report by Augustus Daniel Imms, on a paper 'A hormone causing pupation in the blowfly calliphora erythrocephala' by Gottfried Fraenkel Sectional committee: Zoology Recommended for publication in Proceedings, after modifications are made. It isn't clear what the author means by 'prepupa'Digrams should be added which help to clarify his remarks. Even thought he experiments are crude, the paper should still be published. [Published in Proceedings of the Royal Society B, 1935]. Endorsed on verso as received 12 February 1835. February 1935