Referee's report by William Thomas Astbury, on a paper 'Structure and thermal properties of crystals, VI. The role of hydrogen bonds in Rochelle salt' by Alfred Rene Jean Paul Ubbelohde and Ida Woodward Sectional Committee: Physics Recommended for publication in the Proceedings of the Royal Society of London. Suggests tidying the presentation of the paper, especially the punctuation, to make it suitable for the printers. 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. [1944]