Referee's report by Samuel Roslington Milner, on a paper 'The adsorption of hydrogen. Part II.—Maintenance of a monomolecular layer and liberation of recombined atoms with emission of energy' by M C Johnson Sectional committee: Physics Recommended for publication in Proceedings. The paper could be cut down in length. Some sections should be revised as they don't seem certain enough. [Published in Proceedings of the Royal Society A, 1931]. Endorsed on verso as received 1 April 1931. March 1931