Referee's report by Alexander Ross Clarke, on a paper 'On the influence of geological changes on the earth's axis of rotation' by George Howard Darwin Recommended for publication in the 'Philosophical Transactions of the Royal Society. The nature of the problem is difficult, resulting in an argument with little conviction. The results however are no doubt correct and defensible. Is not sure if the Philosophical Transactions is the right place, and if not, the paper should be published in the Proceedings. Subject: Geology, Physics [Published in the Philosophical Transactions of the Royal Society, 1877] 4 April 1877