Referee's report by Geoffrey Ingram Taylor, on the Bakerian Lecture 'Boundary lubrication. - Plane surfaces and the limitations of Amontons' law' by William Bate Hardy and Ida Bircumshaw Sectional committee: Physics Recommended for publication in Proceedings. Pages 23 and 24 should be omitted as 'they are difficult to understand and don't seem to add anything to the work'. [Published in Proceedings of the Royal Society A, 1925]. Endorsed on verso as received 20 February 1925. 19 February 1925