Referee's report by John Frank Allen, on a paper 'The thermal conductivity of diamond at low temperatures' by R Berman, Franz Eugen Simon and John Michael Ziman Sectional committee: Physics Paper reference code: A153 Recommended for publication in the Proceedings. Allen writes: 'No adverse comments or criticisms. The paper is admirable in style and contains an elegant contribution both to the theory and experiment of thermal conduction processes in dialectic crystals'. [Published in Proceedings A, 1953]. Date received not given. 18 July 1953