Referee's report by Charles Sykes, on a paper 'The statistical aspect of fatigue of materials' by A M Freudenthal Sectional committee: Engineering Recommended for publication in Proceedings. Some further explanation should be adeed with regards to the curves and the various terms such as 'mode'. [Published in Proceedings of the Royal Society A, 1946]. Date received not given. Letter (dated 11 May 1946) states that he approves of the modified paper. The definitions in the appendix should be omitted. 1946