Referee's report by Geoffrey Ingram Taylor, on a paper 'The flight of the dipterous fly Muscina stabulans Fallén' by F S J Hollick Sectional committee: Zoology Recommended for publication in Philosophical Transactions. It is carefully written. The aerodynamical considerations and technique seem good. 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 Philosophical Transactions B, 1940]. Date received not given. 1940