Gray made a gesture of denial. The pluck of the Englishman, facing inevitable death, stirred his admiration. Lack of vitality, more than the wound, made it impossible to get Hastings out of the Gobi alive. Knowing this, Sir Lionel treated his own situation as indifferently as he might have disposed of a routine question of drill.

"I didn't tell you about the lepers at first," he continued, "because I was afraid you might lack the nerve to go on. I wouldn't blame you. But I've seen you under fire—and I know better."

"I'm going after Mary," said Gray grimly.

Sir Lionel nodded.

"Of course. Not much of a chance; but—I'm glad." He coughed and wiped his lips. "You were right, Captain Gray. She—she told me what you said at Ansichow. I regret that she—offended you. I have spoiled her, you know. A dear girl——" His cough silenced him.

Gray sought for words, and was silent. Neither man liked to reveal his feelings.

"My heedlessness brought Mary to Sungan, Captain Gray. Now I'm asking you to make good my mistake, if possible——"

"Excellency!" The shaggy head of Mirai Khan appeared between the tent flaps. "I must speak with you."

Gray went outside, to find the Kirghiz scowling and ill at ease. In their faces the sun was vanishing over the plain of the Gobi, dyeing the bare, yellow hillocks with deep crimson. A brown lizard trailed its body away from the two men, leaving the mark of its passage in the sand.

"Excellency, the hour of our parting is at hand. I go no further. The debt I owed you for saving my life I still owe, but—you will not turn back from Sungan. Hearken, hunter of the mighty little gun. I and my comrades followed the tracks of our enemies. They were camel tracks."