The Explorer pushed on, encountering many difficulties, some due to the unfortunate timbers on the bottom, which often became wedged in rocks, besides increasing the draught by about six inches, a serious matter at this extremely low stage of water.

"It is probable," says Ives, "that there is not one season in ten when even the Explorer would encounter one fourth of the difficulty that she has during the unprecedentedly low stage of water." At one rapid, after the boat by hard labour had been brought to the crest, the line broke and she at once fell back, bumping over the rocks and finally lodging amidst a mass so firmly that it required half the next day to pull her out.

The second attempt to surmount the rapid was successful, and they were then rewarded by a fierce gale from the north, detaining them twenty-four hours, filling everything with sand, and dragging the steamboat from her moorings to cast her again upon the rocks.

When, at last, they could go on they came after a short time to a canyon deeper and grander than any they had yet seen, called Black Canyon, because it is cut through the Black Mountains.

Ives was uncertain, at the moment, whether this was the entrance to what was called Big Canyon (Grand Canyon) or not.