The roar of the plunging water from below rose upward with a deafening sound as they gazed into the seething current. The rising mists obscured the tree tops on either side far below. Should they press on or retreat, as those before them had done? Yes, they must go forward whatever the hazard. They clasped hands, bidding each other good-by. Torrence threw himself into the water first and Fellows followed. A few seconds later both clambered upon a bowlder in the pool below. The narrow cleft by which the former company effected their escape was passed and no alternative but to go forward was left to them. They encountered many other perilous adventures in their thirty-mile trip. Before they escaped from the canyon their provisions gave out. Death by starvation stared them in the face once more. Weakened by hunger and about to give up, they spied at the base of a cliff two mountain sheep. Now, mountain sheep, which roam among the rugged crags, are exceedingly difficult to catch. One of the sheep darted into a cleft. With a quick movement born of desperation Torrence rushed before the opening, but scarcely had he reached the spot before the frightened sheep, in attempting to escape, jumped into his arms. Realizing that his life and that of his companion depended upon securing the animal, he succeeded in killing it with his knife after a fierce struggle. The meat obtained saved their lives and sustained them until they reached a ranch fourteen miles from the place from which they emerged from the end of the canyon. In making the perilous journey they had swum across the river seventy-four times. Although their instruments and most of the other articles which they had taken were lost, yet the valuable data, sought for and recorded in the engineering book, were safely brought out and contained enough encouraging information to lead the government to take up the project of diverting the waters of the Gunnison River to the Uncompahgre Valley. Salt River Valley, one of the most fertile sections of Arizona, has been settled for many years, but the lack of a sufficient supply of water for extended irrigation has caused a large portion of this rich desert land to remain dormant. To meet the demand for more water in this valley the United States Government has just completed one of the greatest water impounding reservoirs in the world, the construction of which called for the greatest engineering skill and cost nearly nine million dollars. Salt River enters the valley after a tumultuous passage through a deep and rugged canyon forty miles long. It derives its name from the saltness of its waters, which results from the discharge of salt springs into the main stream as it courses through the gorge.