The Jinnee unlocked the drawer, and took out the metal cap, which he placed in the breast pocket of his incongruous frock-coat. "So far, well," he said; "next thou must deliver up to me the transcription thou hast made, and swear to preserve an inviolable secrecy regarding the meaning thereof."
"Do you know what you're asking, sir?" said the mule, laying back his ears viciously. "Do you think that to oblige you I'm going to suppress one of the most remarkable discoveries of my whole scientific career? Never, sir—never!"
"Since if thou refusest I shall assuredly deprive thee of speech once more and leave thee a mule, as thou art now, of hideous appearance," said the Jinnee, "thou art like to gain little by a discovery which thou wilt be unable to impart. However, the choice rests with thee."
The mule rolled his one eye, and showed all his teeth in a vicious snarl. "You've got the whip-hand of me," he said, "and I may as well give in. There's a transcript inside my blotting-case—it's the only copy I've made."
Fakrash found the paper, which he rubbed into invisibility between his palms, as any ordinary conjurer might do.
"Now raise thy right forefoot," he said, "and swear by all thou holdest sacred never to divulge what thou hast learnt"—which oath the Professor, in the vilest of tempers, took, clumsily enough.
"Good," said the Jinnee, with a grim smile. "Now let one of thy women bring me a cup of fair water."
Sylvia went out, and came back with a cup of water. "It's filtered," she said anxiously; "I don't know if that will do?"
"It will suffice," said Fakrash. "Let both the women withdraw."
"Surely," remonstrated Mrs. Futvoye, "you don't mean to turn his wife and daughter out of the room at such a moment as this? We shall be perfectly quiet, and we may even be of some help."