Referee's report by William Lawrence Bragg, on a paper 'A high-temperature debye-scherrer camera, and its application to the study of the lattice spacing of silver' by William Hume-Rothery and Peter William Reynolds Sectional committee: Physics Recommended for publication in Proceedings. The problem that the paper deals with will be of wide interest so should be published. The standard of the scale should be precisely defined. [Published in Proceedings of the Royal Society A, 1938]. Endorsed on verso as received 9 March 1938. March 1938