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 gency rations, medicines, a few cooking utensils and blankets. But we can't start anything until it's dark. Sleep if you can. If you can't—don't worry."

He cast a curious glance at the scientist—a glance of mixed good-natured contempt and anxiety.

"This guardian of the gate trick works both ways," he concluded. "If we can't get out, no one will want to get in."

He took a few, sparing swallows of the strong wine, a mouthful of bread and rice and tilted his chair back against the wall. The room was hot and close, and he soon dropped off into a nap. Delabar did not sleep.

Gray, from habit, dozed lightly. He was conscious of the sounds that went on in the street. Several times he wakened, only to drop off again, seeing that all was as it should be. Once or twice he heard Delabar go to the door and peer out to see if the priest was still at his post. Evidently he was, for the Syrian maintained his brooding quiet.

As time wore on, Gray thought he heard Delabar laughing. He assured himself that he must have been mistaken. Yet the echo of the laugh persisted, harsh, and bitter. Delabar must have been laughing.

The officer wondered drowsily what had been the cause of the other's mirth—and sat up with a jerk. He caught at the hand that was stealing under his coat, and found himself looking into Delabar's