Referee's report by Hector Munro Macdonald, on a paper 'Aberration diffraction effects' by G C Steward Sectional committee: Mathematics Recommended for publication in Philosophical Transactions. The results 'could have been presented in a more compact manner'. However, this would involves re-writing the paper which would take a lot of time and effort. Therefore, the paper should be published 'as it stands'. [Published in Philosophical Transactions A, 1926]. Endorsed on verso as received 15 March 1923. March 1923