Referee's report by George Frederick James Temple, on a paper 'The diffraction of a plane sound pulse incident normally on a regular grating of perfectly reflecting strips' by E N Fox Sectional committee: Mathematics Paper reference code: A213 Recommended for publication in the Proceedings. Temple comments: 'This paper is a further development of papers published in the Philosophical Transactions in 1948 and 1949. It is a very competent investigation of a problem of considerable interest both in applied mathematics and in physics. I have no criticisms to make, as the paper seems to be all right and suitable for publication'. [Published in Proceedings A, 1952]. Date received not given. 9 October 1951