Letter from [Owen Thomas] Jones to [Ronald] Winckworth, regarding a paper 'The Formation of Rock Joints and the Cleat of Coal' by [Percy Fry] Kendall and [Henry] Briggs Paper reference code: B.97 Approves for the referee's report to be shared with the authors. [See RR/W/1/53] [Not published in Royal Society journals but published in the Proceedings of the Royal Society of Edinburgh, vol. 53, 1934, pp. 164-187]. Received 27 February 1933 25 February 1933