Referee's report by Max Born, on a paper 'Diffuse scattering of X-rays by crystals - The Faxén-Waller theory and the surfaces of isodiffusion for cubic crystals' by H A Jahn Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests the author quote the work of himself and Kathleen Sarginson. 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]