Referee's report by Paul Adrien Maurice Dirac, on a paper 'On the classical theory of particles' by C Jayaratnam Eliezer Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. Criticises the discussion of dimensions of derivatives. Suggests the author determine whether the relativistic equation can be deduced from one of the other equations, but if this cannot be answered, the paper should be published as it stands. [Published in the 'Proceedings of the Royal Society of London'] No received date. [1948]