along which we had ascended. The sides of the canyon were sheer cliffs.
"We'll try it," said Muir. "Sometimes these canyons are passable."
But the way grew rougher as we descended. The rapids became falls and we often had to retrace our steps to find a way around them. After we reached the timber-line, some four miles from the summit, the going was still harder, for we had a thicket of alders and willows to fight. Here Muir offered to make a fire and leave me while he went forward for assistance, but I refused. "No," I said, "I'm going to make it to the boat."
All that night this man of steel and lightning worked, never resting a minute, doing the work of three men, helping me along the slopes, easing me down the rocks, pulling me up cliffs, dashing water on me when I grew faint with the pain;
