Referee's report by Ralph Howard Fowler, on a paper 'The passage of fast electrons and the theory of cosmic showers' by Homi Jehangir Bhabha and Walter Heinrich Heitler Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. 'It should be read. It is a brilliant discussion and eminently readable. Please arrange!' Recommends rapid publication. Refers to work of Julius Robert Oppenheimer. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 18 December 1936. [December 1936]