Referee's report by Edgar Douglas Adrian, on a paper 'The mechanism of the semicircular canal. A study of the responses of single-fibre preparations to angular accelerations and to rotation at constant speed' by Otto Egon Löwenstein and Alec Sand Sectional committee: Physiology Recommended for publication in Proceedings. There is no mention of the work of D A Ross, who's conclusions were very similar to the authors. This referecne should be added, to avoid the perception that the authors don't want to give credit to a previous worker in the subject. [Published in Proceedings of the Royal Society B, 1940]. Endorsed on verso as received 21 May 1940. May 1940