Description | 'Sir, I have the honour to request the permission of the Council of the Royal Society to use with due acknowledgment, the paper on the Relation between the Nile flood & atmospheric Pressure (Proc. Royal Society February I905) in a report on the Hydrography of te Nile which is about to be published . I have the honour to be, Sir, Your Obedient Servant, H G Lyons'. |