Referee's report by Max Born, on a paper 'On the relation of Debye theory and the lattice theory of specific heats' by Moses Blackman Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. The content is interesting, but the expressions used are objectionable. Encloses a letter for forwarding to the author, with whom he is already in communication. Contains extra question - 'Is there any information contained in the paper which likely to be of value to the enemy?' Referee replies no. [Published in the 'Proceedings of the Royal Society of London'] No received date. [1941]