Copy letter from Robert William Frederick Harrison to Dr J [John] S [Scott] Haldane FRS 'We are posting to you to-day the proof of Miss FitzGerald's paper. I want to ask you to be so kind as to let us have it back corrected at your earliest convenience, because we are keeping open a volume of Philosophical Transactions to take this paper, so that it may be included in the same volume as you own large paper on the same subject. The volume is due to close now, so I much hope you will not find it necessary to send the proof out to America, which would mean a further delay of a fortnight or so.' 17 February 1913