By this time, not only Fenshawe and Irene, but Stump and Abdur Kad'r, when called into counsel, shared Dick's foreboding. It was impossible to do anything before dawn, and the sole difficulty that remained was to decide whether they should march, when the first streaks of light showed in the sky, or await the hour fixed for the interview with Alfieri. They resolved to leave Hussain and a few trustworthy men at the oasis, with instructions to remain there until eight o'clock. If Alfieri kept his tryst, they were to give him a letter, written by Irene, which asked him to follow and join the expedition. Otherwise, they were to ride after the caravan at top speed, and report his non-arrival. So Dick and Irene missed that agreeable watch under the stars, and their thoughts, instead of being given to each other, were centered on the unlucky fortune-hunters whom accident or design had separated from them. Yet, when the sun rose over the desert, it was exhilarating enough to find themselves riding side by side once more. The order of march was simple but well designed. Abdur Kad'r, in command of several Arabs on Bisharin camels, provided a mounted screen half a mile in front. Fenshawe, Royson and Irene, with some of the sailors, formed the advance guard. Then came the _kafila_ proper, with the remainder of the _Aphrodite's_ crew, under Stump's charge, as a rearguard. They had halted for breakfast, and were preparing for another long march before the heat of the sun enforced a rest, when Hussain overtook them. At eight o'clock Alfieri had not visited the _rendezvous_, nor was he to be seen an hour later from the summit of the last hill which gave a view of the oasis. Ill news is little the better because it is expected, and every one was wishful to push on as quickly as possible. But the desert was inexorable in its limitations. Great speed means great exhaustion, and consequently greater demand for water. Nevertheless, they risked the chance of a dry spell at the journey's end, and, finally, despite Irene's protests against being left behind, Royson and Abdullah, with six of the _Aphrodite's_ men, and Abdur Kad'r, at the head of thirty picked Arabs, went on at a spanking pace. They were now on the actual caravan path, having reached it by a cross-country line. According to the sheikh's calculations, they were ten miles from the Well of Moses at four o'clock, and sunset would take place at half-past six. The road was a bad one, and their camels were beginning to lag, but they counted on reaching the ancient camping-ground about half past five. Abdullah was the first to discover recent signs of a large _kafila_ having passed that way. He it was, too, who raised a warning hand when they emerged from a wide valley and crossed a plateau, which, roughly speaking, was three miles from the well.