Referee's report by Frank Horton, on a paper 'Studies in contact potentials. I' by Richard Charles Leslie Bosworth and Eric Keightley Rideal Sectional committee: Physics Recommended for publication in Proceedings. This paper and part II should be combined to make one paper. [Published in Proceedings of the Royal Society A, 1936]. [Title of combined paper changed to 'Studies in contact potentials the condensation of potassium and sodium on tungsten']. Endorsed on verso as received 31 May 1937. May 1937