Copy letter from Robert William Frederick Harrison, to Colonel David Prain, Fellow of the Royal Society Harrison explains that the paper by Professor Percy Groom, 'Longitudinal symmetry in Phanerogamia', upon which Prain reported in March, has been revised and shortened by the author in line with the suggestions made by Prain and the other referees. In view of the expense of publication, the Chairman has asked that one of the original referees review the edited paper and advise on whether the changes have been satisfactorily carried out, and so Harrison asks that Prain give his opinion on it. If Prain agrees, he will send the manuscript to him. 13 December 1907