"Mashallah! Loose him at once," he cried to the man. "Know that this is the brother of whom I told you, saying that he had saved my life, and that I and my people are bounden to him for ever. And now, my brother, mount this horse that I have brought for you: that horse the messenger rode was weary and famished and is being well cared for."

He put no questions to Burnet, treating him as a guest who had been expected. The horsemen rode off, Rejeb commanding the unmounted party to follow as rapidly as they could. During the ride there was little conversation between Rejeb and Burnet, though the latter guessed from the young chief's manner that he either had important news to give, or expected to hear something of importance.

After about half an hour's easy trot they came in sight of extensive ruins on a mound surrounded by swamp, and as they drew nearer to them, Burnet wondered how the stronghold, if this it was, could be approached, for it appeared to be completely encircled by wide expanses of water, broken here and there by areas of mud or reeds. Presently, however, they came to a broad wady that must in ancient times have been one of the major irrigation works of the district. Here the party fell into single file, and Rejeb, apologising for riding in front of his guest, led the way along the narrow embankment of the channel. At intervals the embankment was intersected by smaller wadys: these the horsemen waded through.

When they at length arrived opposite the mound, Rejeb turned abruptly to the right and pushed through a clump of reeds on to a narrow stone causeway, fringed on both sides with tall rushes which completely hid it from view. It led directly to the mound, almost half a mile ahead in a straight line. Burnet learnt, later on, that the causeway was believed to date from the Babylonian age; it was supposed to have been built, not for the passage of the swamp—for in those days the surrounding country was probably dry land, carefully irrigated from the wadys—but as a means of access to the temple which then crowned the mound, in times of flood due to abnormal rainfall. Centuries of neglect had turned the land once well drained into permanent swamp, but the solid masonry of the causeway had withstood the ravages of time, though when Rejeb's people first discovered it it had been much overgrown with rampant vegetation. They had at once perceived the advantages of the mound as a natural fortress and of the causeway as the only means of access. They cleared away the overgrowth except at the edges, where the vegetation that was allowed to remain made the causeway a sort of secret lane.

On riding up the mound, Burnet saw that the ruins were even more extensive than they had appeared at a distance. They covered a space nearly half a mile long and a third of a mile wide. He conjectured that the place had been the site of a temple and the dwellings of a community of priests. The lower part of what had once been a large tower was in a fair state of preservation, and dominated the rest of the ruins. It was here that Rejeb and his family were lodged; for, young as he was, he had already a wife and children. No other buildings had been habitable when the mound was chosen as a harbour of refuge; but the young men of the tribe had made for themselves fairly serviceable shelters out of the fragments of masonry with which the site abounded.

These details were explained by Rejeb as he led the way to his tower. He explained also that only part of his tribe had found refuge here. The rest were dispersed. Many of them, especially the old men, women, and children, had been received by friendly tribes in the southern desert. With the exception of Rejeb's own family, the occupants of the tell were nearly all fighting men. They had with them all their most valuable horses, and were armed with rifles of various patterns. Their great difficulty was the supply of food and fodder. They had brought with them a considerable stock of dates, meal, and dried goat's flesh, which they kept in underground cellars excavated for the purpose; and this they supplemented by periodical forays upon the plantations and flocks of the weaker tribes of the marshes. But it was becoming increasingly difficult to keep up the supply, especially of fodder for the horses. A great part of the surplus produce of the neighbouring tribes was sold to the Turkish army, and the sympathies of these people was naturally on the side of their customers. They would just as readily sell food to the British, but the British were still barred by the entrenchments at Kut el Amara. The smaller communities of Arabs, moreover, were dominated by the large and powerful tribe of Halil; and Rejeb's people, obliged to retreat into their fastness, were not in a position to exchange and barter commodities. Their only means of supplying themselves was to swoop suddenly, most often by night, upon the settlements of their less warlike neighbours, and of late they had only too often returned from these forays unsuccessful.

It was not until Rejeb had conducted Burnet to his tower that the important matters each had at heart were entered upon. In a bare stone room, as comfortless as a hermit's cell, the two young men, seated on blocks of stone, exchanged confidences.

"You know me as Yusuf the boatman," Burnet began. "I owe it to you to tell you that I am really an Englishman—the son of Burnet Aga of whom you may have heard."

The Arab gave no sign of surprise.

"Did not my heart tell me you were not as you seemed?" he said.