Referee's report by Harry Hemley Plaskett, on a paper 'A contribution to the theory of the Foucault test' by E H Linfoot Sectional committee: Physics Recommended for publication in Proceedings, The paper is a 'substantial contribution to optical theory'The paper represents the first complete account of the wave-theory. He is not competent to check the mathematics, so another referee should be found to do this. [Published in Proceedings of the Royal Society A, 1946]. Date received not given. 1945