"David's not in sight," she said. "Do you think we'd better go on?"

"Whether we'd better or not we will," he answered roughly. "Catch up, Daddy John."

They were accustomed to obeying him like children their master. So without more parley they pulled up stakes, loaded the wagon, and started. As Susan fell back to her place at the rear, she called to Courant:

"We'll go as slowly as we can. We mustn't get too far ahead. David can't ride hard the way he is now."

The man growled an answer that she did not hear, and without looking at her took the road.

They made their evening halt by the river. It had dwindled to a fragile stream which, wandering away into the dryness, would creep feebly to its sink and there disappear, sucked into secret subways that no man knew. To-morrow they would start across the desert, where they could see the road leading straight in a white seam to the west. David had not come. The mules stood stripped of their harness, the wagon rested with dropped tongue, the mess chest was open and pans shone in mingled fire and sunset gleams, but the mysteries of the distance, over which twilight veils were thickening, gave no sign of him. Daddy John built up the desert fire as a beacon - a pile of sage that burned like tinder. It shot high, tossed exultant flames toward the dimmed stars and sent long jets of light into the encircling darkness. Its wavering radiance, red and dancing, touched the scattered objects of the camp, revealing and then losing them as new flame ran along the leaves or charred branches dropped. Outside the night hung, deep and silent. Susan hovered on the outskirts of the glow. Darkness was thickening, creeping from the hills that lay inky-edged against the scarlet of the sky. Once she sent up a high cry of David's name. Courant, busy with his horses, lifted his head and looked at her, scowling over his shoulder.

"Why are you calling?" he said. "He can see the fire."

She came back and stood near him, her eyes on him in uneasy scrutiny: "We shouldn't have gone on. We should have waited for him."

There was questioning and also a suggestion of condemnation in her voice. She was anxious and her tone and manner showed she thought it his fault.

He bent to loosen a girth.

"Are you afraid he's lost?" he said, his face against the horse.

"No. But if he was?"

"Well! And if he was?"

The girth was uncinched and he swept saddle and blanket to the ground.

"We'd have to go back for him, and you say we must lose no time."

He kicked the things aside and made no answer. Then as he groped for the picket pins he was conscious that she turned again with the nervous movement of worry and swept the plain.

"He was sick. We oughtn't to have gone on," she repeated, and the note of blame was stronger. "Oh, I wish he'd come!"

Their conversation had been carried on in a low key. Suddenly Courant, wheeling round on her, spoke in the raised tone of anger.

"And am I to stop the train because that fool don't know enough or care enough to picket his horses? Is it always to be him? Excuses made and things done for him as if he was a sick girl or a baby. Let him be lost, and stay lost, and be damned to him."