Paper, 'On the ascent of sap' by Henry H [Horatio] Dixon and J [John] Joly This paper concerns Dixon and Joly's researches into 'the transpiration-current in plants and also of a theory [...] to explain the causes of the ascent of sap in high trees, when root-pressure is not acting.' Annotations in pencil and ink throughout. Note on front reads 'This MS being the original version is to be preserved in the archives - H [Herbert] Rix'. Note preceding the paper reads 'This is the portion of the original which was not printed.' Subject: Botany / Phytomorphology Received 16 October 1894. Read 15 November 1894. A version of this paper was published in volume 186 of Philosophical Transactions as 'On the ascent of sap'. 1894