Referee's report by John Frank Allen, on a paper 'The thermal conductivity of solid helium' by F J Webb, K R Wilkinson and J Wilks Sectional committee: Physics Paper reference code: A84 Recommended for publication in the Proceedings. Allen writes: 'The paper is clear and concise and would suffer if subjected to any compression. The experiments are well conceived, well carried out and well described, and the results and their interpretation add very considerably to acknowledge of the process of thermal transfer in ionic crystals.' [Published in Proceedings A, 1952]. Date received not given. 13 June 1952