Referee's Report by [Owen Thomas Jones], on a paper 'The Formation of Rock Joints and the Cleat of Coal' by [Percy Fry] Kendall and [Henry] Briggs Paper reference code: B.97 Raises an issue with the paper's conclusions, and lists a number of reasons for this. [Not published in Royal Society journals but published in the Proceedings of the Royal Society of Edinburgh, vol. 53, 1934, pp. 164-187]. [20 February 1933]