Dear Lord Cromer, When I was pursuing along the banks of the Euphrates the leisurely course of oriental travel, I would sometimes wonder, sitting at night before my tent door, whether it would be possible to cast into shape the experiences that assailed me. And in that spacious hour, when the silence of the embracing wilderness was enhanced rather than broken by the murmur of the river, and by the sounds, scarcely less primeval, that wavered round the camp fire of my nomad hosts, the task broadened out into a shape which was in keeping with the surroundings. Not only would I set myself to trace the story that was scored upon the face of the earth by mouldering wall or half-choked dyke, by the thousand vestiges of former culture which were scattered about my path, but I would attempt to record the daily life and speech of those who had inherited the empty ground whereon empires had risen and expired. Even there, where the mind ranged out unhindered over the whole wide desert, and thought flowed as smoothly as the flowing stream-even there I would realize the difficulty of such an undertaking, and it was there that I conceived the desire to invoke your aid by setting your name upon the first page of my book. To you, so I promised myself, I could make clear the intention when accomplishment lagged far behind it. To you the very landscape would be familiar, though you had never set eyes upon it: the river and the waste which determined, as in your country of the Nile, the direction of mortal energies. And you, with your profound experience of the East, have learnt to reckon with the unbroken continuity of its history. Conqueror follows upon the heels of conqueror, nations are overthrown and cities topple down into the dust, but the conditions of existence{viii} are unaltered and irresistibly they fashion the new age in the likeness of the old. "Amurath an Amurath succeeds" and the tale is told again.