Copy letter from Robert William Frederick Harrison, to Sir George Darwin, Fellow of the Royal Society, Cambridge Harrison does not wish to send the £300 for the South African Arc until he can be given some assurance that the Council's condition for the funds, namely that the gap in the arc be filled, will be met. He enquires as to who can give such an assurance, asking whether Darwin can or whether Sir David Gill should be asked. 8 June 1906