On waking, after two or three hours of very sound and refreshing sleep, he found that owing to some change in his position his turban had fallen off. This, in itself not very serious or remarkable accident, gave him on the present occasion much apprehension and concern. For in his turban he had placed, as has been mentioned, the invisible object, whatever it might be, which had in some inexplicable manner conferred upon him also, while he was in contact with it, the condition of invisibility. He took up the turban most carefully, he felt in it, he put it on, but nowhere could he encounter the soft, cool sensation with which he had become familiar. He groped laboriously all round the spot where he had been lying, but in vain. Whether the object had rolled away, or whether it had been carried to a distance by the breeze, or possibly had even been dissipated altogether, he could not determine. One thing only was clear and beyond conjecture--the charm was lost for ever. Coming at last most unwillingly to that conclusion, he sat down cross-legged upon the grass as on a divan, resting his elbow upon the log which had served him for a pillow, and began to consider how he should manage to make his way back to his own dominions through that land of idolaters. He had no idea of the distance to be traversed, but he reflected that, having no longer the aid and protection of being invisible, and being possessed of no money, his difficulties must necessarily be great. Moreover, he was not without considerable anxiety as to what might have occurred at Bagdad while he had been absent. Giafer, indeed, to whom all the details of the government of the country had practically been confided for many years, he could thoroughly trust. But Ibrahim, who would probably have succeeded to the Caliphate, was known to hate the Grand Vizier, and would not only put him to death, but might also, not improbably, have taken measures to rid himself of Zobeideh and her son. Oppressed by these gloomy thoughts the Caliph sat for a long time without moving. At length, hearing the tramp of horses in the distance, he looked up, and was overjoyed to behold two men coming along the road, whom he at once knew by their dress to be Arab merchants. Each was on horseback, and they had with them, besides several other horses, some mules and asses laden with packages. And there was also a kind of closed carriage or palanquin, borne by some slaves, in which no doubt was conveyed a lady or female slave of great value. Now, when the Caliph saw these men approaching, he rose up quickly and went to meet them. When he drew near, he saluted them and inquired whither they went. To which they replied: "To Bagdad." And they inquired of him how it came to pass that he should be on foot and alone in that pagan kingdom, seeing it was evident by his dress that he was a Moslim.