Copy letter from Robert William Frederick Harrison, to Professor John Joly, Fellow of the Royal Society 'Dear Professor Joly, Professor Ewart's second paper on "The Ascent of Water in Trees", of which an abstract appeared in Proceedings [of the Royal Society] No. B 533, has not yet been published, although the printing for the Transactions [Philosophical Transactions of the Royal Society] is now going forward. The separate number of the Transactions containing it will probably be issued in a month or so and a copy will then be sent to you. Believe me, very truly yours, Robt [Robert] Harrison'. 5 October 1907