The dose was given and Harding, feeling the urgent need of action if he were to continue calm, got up and wandered about the muskeg. Coming back after a time, he looked at Clarke, who merely shook his head, though his face now showed signs of uneasiness. Harding sat down again and refilled his pipe, noticing that the stem was nearly bitten through. He gathered from the doctor's expression that they would soon know what to expect and he feared the worst. Now, however, he was growing cool; his eyes were very stern and his lips had set in an ominously determined fashion. Benson, who glanced at him once or twice, thought it boded trouble for the doctor if things went badly. The American had a ruthless air.

At length Clarke, moving silently but quickly, bent over his patient, felt his pulse, and listened to his breathing; and Harding leaned eagerly forward. Blake seemed less restless, his face, which had been furrowed, was relaxing; there was a faint damp on it. He moved and sighed, but the sigh was somehow reassuring, and then turning his head weakly, closed his eyes. A few moments later Clarke stood up, stretching out his arms with a gesture of deep weariness.

"I believe your partner has turned the corner," he said. "He must sleep as long as he is able."

Harding crept away, conscious of a relief so overpowering that he was afraid he might do something foolish and disturb his comrade if he remained. Scarcely noticing where he was going, he plunged into the swamp and ploughed through it, smashing down the reeds and splashing in the pools. Quick movement was balm to his raw-edged nerves, for the suspense of the last two hours had tried him very hard. When he returned to camp, rather wet and muddy, Clarke, who made him a sign demanding silence, was sitting by his patient's side, and Harding saw that Blake was sound asleep. Then with a sense of thankfulness too deep for expression he set about preparing the evening meal. Now he could eat with appetite.

Before he and Benson had finished their repast Clarke joined them and, answering a question, said, "I believe the worst danger's over, though there's a possibility of a relapse. He'll need careful attention for several days."

"Longer I think," said Harding. "Anyhow, you'll have to make up your mind to stop while it strikes us as necessary."

"My time's valuable and you run some risk in keeping me. You must recognize that there's a likelihood of the Stonies picking up my trail."

"If they get here, they'll run up against all the trouble they'll have any use for," Harding rejoined. "However, I told our guide, who seems pretty smart at such matters, to take precautions, and I understand he fixed things so it would be hard to follow our tracks. You may remember that he took us across all the bare rocks he could find and made us wade up a creek. Besides, as you seem to have played on your friends' superstitions, they mayn't find anything remarkable in your disappearing mysteriously."

"You're a capable man," Clarke told him with an air of resignation. "Anyway, I find this case appeals to my professional interest. For one thing, it's curious that the malaria should attack him in a severe form after a lengthy absence from the tropical jungles where he caught it. By the way, how long is it since he left India?"

Harding shrewdly returned an evasive answer. He did not think it desirable that Clarke should learn too much about his comrade's connexion with India.