Referee's report by Ralph Howard Fowler, on a paper 'A method for the numerical or mechanical solution of certain types of partial differential equations' by Douglas Rayner Hartree and J R Womersley Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. Criticises some of the mathematics. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 26 April 1937. [April 1937]