Yet--as Irene had guessed correctly--this magnificent progress through the desert contained a canker that threatened its destruction. Either von Kerber's calculations were at fault, or the papyrus was a madman's screed. The caravan was already two marches beyond the point agreed on by every authority consulted as that fixed by the Greek who survived the massacre of the Roman legion. The unhappy Austrian could no more identify the Five Hills mentioned in the papyrus as the essential clue to the whereabouts of the treasure than a man in an unknown forest can distinguish a special group of five trees. That is to say, he may blunder on them by chance, but he cannot find them by using his judgment. As Irene put it, here were not five, but five thousand hills. The mortal puzzle before von Kerber was to pick his five. When the caravan arrived at the halting-place the tense solitude gave way to pandemonium. Camels grunted and squealed in eager plaint to be relieved of their loads, horses neighed and fought for the best tufts of grass, men raged at each other as though the work of preparing the camp were something new and wholly unexpected. Through the turmoil strode Abdur Kad'r, a lean, saturnine Arab, who anathematized all his assistants indiscriminately, only varying his epithets according to the nationality of the man under the lash of his tongue at the moment. "Bestir yourself, illegitimate one. Are we to await the setting sun ere the tents are fixed?" he shouted at a negro who was bothered by a knotted rope. A crash behind him told that a too-zealous Arab had tumbled a box to the ground. "Oh, you owl, what evil have you done?" roared the Sheikh, transfixing the culprit with a glittering eye. "Lo, I loosened a strap, honored one, and the accursed thing fell," was the explanation. "It fell, eh? So shall my whip fall, Sidi Hassan, if thou art not more painstaking." He rushed towards a group of Somali syces. "Pigs, and children of pigs," he cried, "for what does the Effendi pay ye? Is there not occupation, ye black dogs? May your fathers' graves be defiled by curs!" Stump, whose rubicund visage was burnt brick-red by the desert, took a keen interest in Abdur Kad'r's daily outpourings. He had no Arabic, but he appreciated the speaker's fluency. "He'd make a bully good bo's'n," was his favorite comment, and he would add sorrowfully, "I wish I knew wot he was sayin'. It 'ud do me a treat." In an astonishingly short space of time the camp would be in form, fires lit with parched shrubs gathered during the last stage of the journey, a meal cooked, and every one settled down to rest until sunset, when, if there was no evening march, the Arabs and negroes would sing, and perhaps indulge in amazingly realistic sword-play, while the dozen sailors brought from the yacht would watch the combatants or engage in a sing-song on their own account.