Referee's report by Paul Adrien Maurice Dirac, on a paper 'The commutation laws of relativistic field theory' by Rudolf Ernst Peierls Sectional committee: Mathematics Paper reference code: A56 Recommended for publication in the Proceedings. Dirac writes: 'The appendix is longer that its importance justifies. the argument from equation (A6) to equation (15) need not be given in detail; it would be sufficient to state the results. P 28 should be condensed to correspond.' [Published in Proceedings A, 1952]. Date received not given. 23 April 1952