Excepting the invalid, there was no one in that chamber save the faithful Ali, who moved noiselessly about, from time to time, or sat immovably upon the floor and gazed on his master's pallid face.
As the silvery tones of the chamber clock tinkled forth the third quarter after ten, the door opened, and a small, dark, thin man, with large whiskers, keen, penetrating eyes, broad, bald forehead, thinly covered with gray hair, and apparently about fifty years of age, briskly entered. It was Dr. Orfila, a name somewhat known in medical science. Approaching the bed, he placed his fingers upon the sick man's pulse, and gazed earnestly on his face for some time in silence.
"Strange!" he at length muttered; "the most powerful drugs in the most unheard-of quantities are powerless! Who, then, is this man, whose nature so differs from that of every one else? Can he so have accustomed his system to poisons, that, as with the King of Pontus, they are ineffectual to help or to harm him? His constitution must be iron! The vitality of a dozen men is in him, or he'd have been dead a month ago. Well, it's plain he's no worse, if he's no better. Drugs are useless, and he must be left to nature and his amazing constitution. This stupor, this utter death of all the faculties and senses for so long a time, is wonderful. Fever, delirium, anything but this death-like trance. It seems as if this man had been sleepless all his life before, and that now his overwrought brain and heart were compensating themselves for the toil and wakefulness of years. Could I but excite the nerves!"
For some time the physician gazed in deep thought at the pale face of the unconscious slumberer. Suddenly turning to the Nubian, he said to him: "Ali, where does your master keep the drugs he has been for years accustomed to take?"
The Nubian stared in mute amazement, but moved not from his rug.
"Ali," said Dr. Orfila, sternly, "unless I see and know those drugs, this night your master dies."
The Nubian looked anxiously into the face of the physician, and then, as if satisfied with the scrutiny, rose, and, with noiseless steps, left the room. In a few moments he re-entered and placed in the physician's hands a small casket of ebony, exquisitely worked and studded with gems. Taking it hastily to the shaded lamp upon a table at the extremity of the chamber, he attempted to open it, but his attempts were vain. Indeed, to all appearances, it was a solid block of ebony, and its extreme heaviness, compared with its dimensions, seemed to favor the idea.