Referee's report by Joseph John Thomson, on a paper 'On the ascent of sap' by Henry Horatio Dixon and John Joly Recommended for publication but does not state in which journal. Cannot comment on the botanical parts, and the physical parts are only slight. Suggests the authors should have gone into more detail when describing their experiments. The physical parts are important and should be published. Suggests the opinion of a botanist be sought. Subject: Botany [Published in the Philosophical Transactions of the Royal Society, 1895] 20 February 1895