Referee's report by George Gerald Henderson, on a paper 'Some experiments on the catalytic reduction of ethylene to ethane' by Dorothy Muriel Palmer and William George Palmer Sectional Committee: Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper is 'a valuable contribution' to knowledge of the subject. [Published in the 'Proceedings of the Royal Society of London' A, 1921] Endorsed on verso as received 26 April 1921. [April 1921]