he comparative coolness of dusk was tempering the feverish midday heat when Rawson awoke. And, strangely, his troubles and all his conflicting plans had been simplified by the magic of sleep. His course was entirely plain. He was going to the crater again.

"What's there?" Smithy demanded. "What do you think that you'll find?"

"I don't know," was the reply.

"Then why—what the devil's the idea?"

"It's my job. They put it up to me, Erickson and his crowd. I've got to go."

And nothing Smithy could say seemed able to reach Rawson and swerve him from his single idea.

"You'll be safe on the road," Rawson told him, while he filled a canteen with water in preparation for his own trip. "You can get to the highway by morning."

Smithy did not trouble to reply. Was Rawson out of his mind? He could not be sure. Certainly he had got an awful bump, but there were no bones broken. However, it might be that he was still dazed—a crack on the head might have done it.