He took a second and somewhat larger drink.

Then, waiting a while, he drank freely and as much as he wanted.

Strength, courage, optimism flowed back into his veins.

As they came down the cliff he had not seen any way to rescue Grosvenor, nor did he see it now, but he knew that they would do it.
His restored body and mind would not admit the possibility of failure.
They remained nearly an hour in the shadow of the bushes at the water's edge, and then began the slow and painful ascent to the niche, which they reached without mishap.

Another half hour there, and, having examined well their arms, they climbed to the cliff's rim, where they looked over, and Robert obtained his first view of the Indian camp.
The feasting was over, the fires had sunk far down, and most of the warriors were asleep, but Tandakora himself sat with his arms across his chest, glowering into the coals, and a line of sentinels was set.
A red gleam from his uniform showed where Grosvenor, leaning against a log, had fallen at last into a happy slumber, in which his desperate case was forgotten for the time.
"I confess that I don't know how to do it, still it must be done," whispered the hunter.
"Yes, it must be done," the Onondaga whispered back.