"N-o." But she hesitated and even shuddered as she too lay down and peered into the forbidding place.

"We'll not take any chances we don't have to." He got up and began immediately to make his few preparations. "Here's the rifle; I'll leave it handy for you in case our friend Rios should surprise us. I'll take a handful of stuff with me to burn for a torch. And we'll have another look out into the cañon to begin with."

He drew out the rifle and gave it to Betty. He placed other stones with the ones she had slipped under the edges of the boulders. And finally he went to look out into the cañon.

"No one in sight," he reported. "And now, here goes."

He sat down at the edge of the opening in the floor, set a match to his crude torch, grinned comfortingly up at Betty and wriggled over and set his foot to the first step. As he did so there came to him an unpleasant memory of the fashion in which Zoraida had guarded her own secret places with rattlesnakes; he wondered if any of the ugly brutes lived down here? As it happened the thought had its influence in saving him from mishap later. For, though he came upon no snakes, he went warily and thus avoided another danger.

His torch burnt vilely and smoked copiously. But what faint light it afforded was sufficient. Step by step he went down until feet and legs and then entire body were lost to Betty above; she had set the rifle aside and was kneeling, her hands clasped in her excitement. Now she could see only his head and the torch held high; he looked up and smiled at her and waved the faggot. Then she saw only the dimly burning fire and the hand clutching it. And dimmer and dimmer grew his light until she strained her eyes to catch a glint of it and could not tell if it were being extinguished for want of dean air or if he were very, very far below her.

"Jim!" she called.

"All right," his voice floated back to her.

He had reached the bottom of the stone stairway; his feet shifting back and forth informed him that he was on a rock floor that was full of inequalities and that pitched steeply ahead of him. His fire was almost out, deteriorating into a mere smudge curling up from dying embers. The air was bad, thick and heavy; breathing was difficult. He looked up and made out the dim square by which Betty knelt. He could go a little further without danger, since if the air grew worse he could still turn and run back up the steps? The floor seemed to be pitching still more steeply. Fearful of a precipice or a pit and a fall, he went down on his hands and knees and crept on. Thus he held his poor torch before him and thus he made a first discovery. The smoke was drifting steadily into his face. And that meant a current of air.

Still crawling, he pressed forward eagerly, sniffing the air. But he relaxed none of his caution; the floor underneath still pitched steeply and, it seemed to him, grew steeper. Then his light began to brighten; the embers glowed and when he blew on them, broke again into flame. He looked up; he could not see the square of light above now. Evidently he was passing into some sort of wide tunnel or lengthy chamber. Dimly he could descry walls on either side of him. Ahead was only black emptiness; underfoot the uneven floor seeming to grow smoother and to slant still more abruptly downward.