Referee's report by Ralph Howard Fowler, on a paper 'On the flow of gas through a nozzle with velocities exceeding the speed of sound' by L Fox and Richard Vynne Southwell Sectional Committee: Engineering Recommended for publication in the 'Proceedings of the Royal Society of London'. The results were obtained using accurate methods. Refers to work of Meyer. 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'] No received date. 8 January 1944