"Is this," continued Duban, "the return I meet from thee? Thou givest me, meseems, but crocodile boon." Quoth the King,"What is the tale of the crocodile?", and quoth the physician, "Impossible for me to tell it in this my state; Allah upon thee, spare me, as thou hopest Allah shall spare thee." And he wept with exceeding weeping. Then one of the King's favourites stood up and said, "O King! grant me the blood of this physician; we have never seen him sin against thee, or doing aught save healing thee from a disease which baffled every leach and man of science." Said the King, "Ye wot not the cause of my putting to death this physician, and this it is. If I spare him, I doom myself to certain death; for one who healed me of such a malady by something held in my hand, surely can slay me by something held to my nose; and I fear lest he kill me for a price, since haply he is some spy whose sole purpose in coming hither was to compass my destruction. So there is no help for it; die he must, and then only shall I be sure of my own life." Again cried Duban, "Spare me and Allah shall spare thee; and slay me not or Allah shall slay thee." But it was in vain. Now when the physician, O Ifrit, knew for certain that the King would kill him, he said, "O King, if there be no help but I must die, grant me some little delay that I may go down to my house and release myself from mine obligations and direct my folk and my neighbours where to bury me and distribute my books of medicine. Amongst these I have one, the rarest of rarities, which I would present to thee as an offering: keep it as a treasure in thy treasury." "And what is in the book?" asked the King and the Sage answered, "Things beyond compt; and the least of secrets is that if, directly after thou hast cut off my head, thou open three leaves and read three lines of the page to thy left hand, my head shall speak and answer every question thou deignest ask of it." The King wondered with exceeding wonder and shaking[FN#99] with delight at the novelty, said, "O physician, dost thou really tell me that when I cut off thy head it will speak to me?" He replied, "Yes, O King!" Quoth the King, "This is indeed a strange matter!" and forthwith sent him closely guarded to his house, and Duban then and there settled all his obligations. Next day he went up to the King's audience hall, where Emirs and Wazirs, Chamberlains and Nabobs, Grandees and Lords of Estate were gathered together, making the presence chamber gay as a garden of flower beds. And lo! the physician came up and stood before the King, bearing a worn old volume and a little etui of metal full of powder, like that used for the eyes.[FN#100] Then he sat down and said, "Give me a tray." So they brought him one and he poured the powder upon it and levelled it and lastly spake as follows: "O King, take this book but do not open it till my head falls; then set it upon this tray, and bid press it down upon the powder, when forthright the blood will cease