Referee's report by Max Born, on two papers 'Infra-red absorption spectra of some amino compounds' and 'The vibrations and the molecular structure of urea and guanidonium' by Lotte Kellner Sectional committee: Physics Both paper recommended for publication in Philosophical Transactions,as it is too long for Proceedings. He cannot judge the experimental part of the paper and is not a specialist in the theoretical part. [Both papers published in Proceedings of the Royal Society A, 1941]. Date received not given. 1940