"But in order that I may have a keepsake of my dear father," continued Abdul Kassim, "permit me to take home the casket. It will be of no use to you since you have divided the contents." Ali Hassuf hesitated at first, but finally agreed to Kassim's wish. The three brothers left the empty house, and went each to seek his fortune in his own way. Ali Haitam bought a piece of muslin, folded it into a turban, sewed the lapis lazuli inside, and fixed it firmly on his head. Then he went to the bazaar and waited for an influx of wisdom. And see! The power of the stone set to work and his mind was filled with knowledge! He knew the origin of all things, and his eyes could see through walls five feet thick! He passed the Caliph's palace, and he could see that in the recesses of the cellars were hidden 9,000 sacks of gold, and that Fatma, the daughter of the Caliph, was the most lovely maiden in the East; and an idea occurred to him that dazzled him. "How would it be," he thought, "if I placed my wisdom at the Caliph's disposal, became his first adviser, and finally married the lovely Fatma?" But together with this dream came the longing to display to an admiring crowd some proofs of his wisdom. He hurried back to the bazaar, mounted the highest steps at the gates, and cried: "You people of Bagdad, who believe that the sun moves round the earth, you are ignorant fools and sons of fools! Hear now what I preach to you. The sun stands still, but the earth moves!" He intended to continue, but the cries of the bystanders interrupted him. "Ali Haitam has gone mad," they cried; "listen to the nonsense he is talking. Come, let us hold him head first under the lion's mouth at the spring; that will restore him to reason!" [Illustration: "THE JUICY FRUIT KNOCKED THE TURBAN FROM ALI'S HEAD."] And one, a fruit dealer, took an orange, and crying, "Ali Haitam is right, the sun moves just as little as this orange!" flung the orange at the philosopher on the steps. The juicy fruit knocked the turban from Ali's head. He stooped to regain it, but in vain. The fruit dealer's throw was the signal for a general onslaught, so that he was obliged to take to his heels and fly for home. Dirty and panting he reached his hut, deeply grieved at the loss of his precious stone, and furious at the stupidity of the people who showed so little understanding of the first principles of science.