Referee's report by John Evans, on a paper 'Niagara falls as a chronometer of geological time' by J W Spencer Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. Suggests the paper is more suitable for a geological journal, or a North American society such as the Smithsonian Institution or the Geological Survey of the United States of America, especially as the author is the State Geologist for Georgia. The abstract published in the Proceedings will suffice. Subject: Geology [Published in the 'Proceedings of the Royal Society of London', 1894] 18 June 1894