Referee's report by Nevill Francis Mott, on a paper 'A transmutation function for deuterons' by P L Kapur Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. Finds the first few pages to be unclear. Provides detailed list of points for revision or modification. The problem to be solves should be defined more clearly. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 12 August 1937. [August 1937]