Referee's report by Henry Frederick Baker, on a paper 'Second memoir on the compositions of numbers' by Percy Alexander MacMahon Sectional Committee: Mathematics Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Has not had time to look thoroughly through all 105 pages, but will do so if desired and more time allotted. [Published in the Philosophical Transactions of the Royal Society] Endorsed on verso as received 20 September 1906. [October 1906]