Referee's report by William Robin Thompson, on a paper 'Olfactory conditioning in a parasitic insect and its relation to the problem of host selection' by William Homan Thorpe and F G W Jones Sectional committee: Zoology Recommended for publication in Proceedings, in full. The rod 'I' is used, although it is a joint paper. This should be changed. [Published in Proceedings of the Royal Society B, 1937]. Endorsed on verso as received 1 June 1937. May 1937