Referee's report by Charles Glover Barkla, on a paper 'X-ray studies of the structure of hair, wool, and related fibres. IV. The molecular structure and elastic properties of the biological cells' by H J Woods Sectional committee: Physics Recommended for publication in Proceedings. Other papers in the series have been previously published in Proceedings, so it belongs there. The paper is quite interesting and it treats the cells in a scientific way. [Published in Proceedings of the Royal Society A, 1938]. Endorsed on verso as received 1 February 1938. February 1938