Referee's report by Alfred Fowler, on a paper 'The spectrum of H2: The bands analogous to the ortho-helium line spectrum' by Owen Willans Richardson and K Das Sectional committee: Physics Recommended for publication in Proceedings, in full. The paper is a 'valuable contribution'. It is very detailed, but there is no other way of presenting the numerical data involved. [Published in Proceedings of the Royal Society A, 1929]. Endorsed on verso as received 5 January 1929. 3 January 1929