Referee's report by William Spottiswoode, on a paper 'On a class of differential equations, including those which occur in dynamical problems.- Part I' by William Fishburn Donkin Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Has received a revised passage from the author, which should replace the original passage. Subject: Mathematics [Published in the Philosophical Transactions of the Royal Society] 7 April 1854