enterprise, and it had come to his knowledge that there existed somewhere a certain spring the waters of which would confer immortality upon any descendant of Shem who should drink of them, and he started out to find this spring. I traveled with him for more than a year. It was on this journey that he visited Abraham when the latter was building the great edifice which the Mohammedans claim as their holy temple, the Kaaba.
"It was more than a month after we had parted from Abraham that I, being in advance of the rest of the company, noticed a little pool in the shade of a rock, and being very warm and thirsty, I got down on my hands and knees, and putting my face to the water, drank of it. I drank heartily, and when I raised my head, I saw, to my amazement, that there was not a drop of water left in the spring. Now it so happened that when Alexander came to this spot, he stopped, and having regarded the little hollow under the rock, together with its surroundings, he dismounted and stood by it. He called me, and said: 'According to all the descriptions I have read, this might have been the spring
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