Referee's report by Robert Ernest Davies, on a paper 'Excitation and ionization of atoms by electron impact. I. The Born and Oppenheimer approximations - General theory' by David Robert Bates, A Fundaminsky and Harrie Stewart Wilson Massey Sectional committee: Mathematics Paper reference code: A3 Recommended for publication in Philosophical Transactions. Davies suggests that the paper is 'long-winded [...] in reading the text one has the feeling that the different sources of error are discussed independently one at a time and that this involves a certain amount of repetition and also that the style of the text would benefit from being somewhat more condensed.' [Published in Philosophical Transactions A, 1950]. Endorsed on recto as received 2 March 1950. [March 1950]