While he waited, Kirby considered them. Who had made the beautiful footprints beside him, when he had slept at last after his arrival here? Why had so many of the queer, fuzzy topped shrubs with immense yam-shaped roots, which grew here been taken away during that first sleep, and during all his other periods of sleep? Who had taken them? Early in his stay, he had learned that the tuberlike roots were good to eat and would sustain life, and he supposed that the unseen people of the valley took them for food. But who were these people of the valley? Who had laid beside him during his first sleep the immense lily with perfume like that which came with the milky geyser spray--that spray of death and delight mingled? Why had someone scratched a line in the earth from him directly to the distant orifice of the geyser? Was this, as he believed, a signal to come not only to the edge of the orifice, _but to lower himself down into its depths_? And if the line were intended as a signal, did the persons who came to the valley while he slept, always eluding him, wish him well or mean to do him harm? Last question of all: had the beautiful girl's face he believed he had seen just once, been real or an hallucination? It had been while he was kneeling at the very edge of the geyser cone, staring down its many colored throat, that the vision had appeared. Misty white amidst the green gloom, the face had been turned up to him, smiling, its lips forming a kiss, and its great eyes beckoning. Had the face been real or a dream? Eleven days in the valley! Now, with his braided rope ready at last, he was going to do something which might help to answer his questions. * * * * * Kirby reached out and began to run his grass rope, yard by yard, through his hands, searching carefully for any flaw. A canyon wren made the air sweet above him, while the morning sun began to wink and blink against the shadows which still lay against the face of the guardian cliffs. Kirby glanced at his watch and got up. Crossing beyond the mouth of the geyser, he grinned good morning at his friend the Conquistadore, and marched on into the shade of the live oak which grew nearest the geyser. Here he made one end of his rope fast to the gnarled trunk, inspected his pistol, patted his tunic to make sure that the cylinder of gold was safe, then stood by to await the geyser. With the passing of three minutes there came from the still empty orifice a sonorous rumbling. Kirby grinned. From deep in the earth issued a sound of fizzing and bubbling, and then, to the accompaniment of subterranean thunder, burst loose the milky, upward column which had never ceased to awe the man who watched so eagerly this morning. As the titanic jet leaped skyward now, the slanting rays of the sun caught it, and turned the water, fanning out, into a fire opal, into a sheet of living color.