Referee's report by Edward Neville da Costa Andrade, on a paper 'On the absorption of polar crystals in the infra-red' by Moses Blackman Sectional Committee: Physics No clear statement regarding publication in the 'Proceedings of the Royal Society of London'. Is not that familiar with the subject, suggests the paper be submitted to a mathematician such as John Edward Lennard-Jones. Has read the papers referred to, byt the author and Born. Does not find the comparison between theory and experiment very clear, the discussion could be improved and the rest of the paper condensed. [Published in the Philosophical Transactions of the Royal Society] Endorsed on verso as received 20 April 1936. [April 1936]