"Fine!" exclaimed Mr. Lewis. "Then we'll leave now and get packed and be here for you early in the morning." Fekmah bowed. "And I will make the stolen map over again from memory, as near as can," he said. They bade the Arab good-bye and left the hotel to get their belongings together. If they were to leave for the Sahara the next morning, a great deal of packing would have to be done. "Don't suppose there's any use trying to find the thieves, is there?" asked Joe, as they approached their hotel. Dr. Kirshner laughed unwillingly. "They are probably halfway to the Sahara by now," he returned, although he knew this to be an exaggeration. When the explorers arrived at their rooms, Dr. Kirshner directed the preparations for the expedition, and the remainder of the day was spent in doing this. It seemed that the archæologist had forgotten his duties as a scientist and was thinking only of finding the hidden riches. "If we are fortunate enough to find our objective, we will be paid many times the cost of the expedition," he said. "If those crooks don't get ahead of us," added Joe, with a grim smile. "They won't--not if we can help it," blurted out Bob, fumbling his automatic. At noon the adventurers stopped only a few minutes for a meal, so eager were they to finish the task of preparing for the expedition. They found it necessary to purchase much that they did not have, and the bazaars of Algiers were visited often for the unusual in the way of luxuries. At last the work was completed, and all sat down to rest after the strain. Bob and Joe had had the experience once before of helping to make preparations for an expedition and knew what was expected of them. "I wish we could take motion pictures of this city," remarked Bob that evening. "But we've been instructed to wait till we start the journey in the Sahara." The next morning the explorers were up early, and after a bountiful breakfast they made their way to Fekmah's hotel. The Arab was expecting them and had finished making a second map. It was none too accurate, for he did it from memory, but it promised to be the only means between defeat and failure. "You may wonder why I bothered to make more map," he said to his friends. "But it possible that I forget some of the landmarks when we are on way, and this will----" "Come to the rescue," interrupted Joe, smiling. "And also," Fekmah went on, "you may have this if anything should happen me." "Let's hope nothing will," said Bob. "And now," began Dr. Kirshner, "I'm going down to the railroad station and find out if we can get a train this morning. I'll be back in a short time." "While he's gone, suppose we go out," suggested Joe to his chum. "There's a lot we can see around here before we leave." "All right," Bob replied. "But we don't want to stay too long. There might be a train out in an hour."