Copy letter from Robert William Frederick Harrison to Francis Darwin FRS 'Dear Mr Darwin, In sending you the enclosed form for report on Mr Thoday's paper, which has been communicated for the "Proceedings" [of the Royal Society], I am directed to call your attention to the great length of the paper and to ask whether it would not be better considered as for the "Philosophical Transactions" [of the Royal Society]. It is estimated to print to 60 pages of Proceedings - an unprecedented length for a Proceedings paper.' 15 June 1909