Referee's report by Ralph Howard Fowler, on a paper 'Catalysis of O-P transformation in H2' by F Kalckar and E Teller Sectional Committee: Not stated [Physica and Chemistry] Recommended for publication in the 'Proceedings of the Royal Society of London'. Finds the paper badly written, makes suggestions for improvement. Refers to work of John Edward Lennard-Jones and Cook. [Not published] Endorsed on verso as received 2 November 1934. [November 1934]