The cliffs are so high that the twilight is perpetual, and the sky seems like a flat roof pressed across them. As the worn men stretched themselves out in their blankets they saw a bright star that appeared to rest on the very verge of the eastern cliff, and then to float from its resting-place on the rock over the canon. At first it was like a jewel set on the brink of the cliff, and as it moved out from the rock they wondered that it did not fall. It did seem to descend in a gentle curve, and the other stars were apparently in the canon, as if the sky was spread over the gulf, resting on either wall and swayed down by its own weight. Sixteen days after leaving Green River City the explorers reached the end of the Canon of Lodore, which is nearly twenty-four miles long. The walls were never less than two thousand feet high except near the foot. They are very irregular, standing in perpendicular or overhanging cliffs here, terraced there, or receding in steep slopes broken by many side-gulches. The highest point of the wall is twenty-seven hundred feet, but the peaks a little distance off are a thousand feet higher. Yellow pines, nut pines, firs and cedars stand in dense forests on the Uintah Mountains, and clinging to moving rocks they have come down the walls to the water's edge between Flaming Gorge and Echo Park. The red sandstones are lichened over, delicate mosses grow in the moist places and ferns festoon the walls. [Illustration: HORSESHOE CANON.] A few days later they were upset again, losing oars, guns and barometers, and on July 18th they had only enough provisions left for two months, though they had supplied themselves with quantities which, barring accidents, should have lasted ten months. On July 19th the Grand Canon of the Colorado became visible, and from an eminence they could follow its course for miles and catch glimpses of the river. The Green, down which they had come so far, bears in from the north-west through a narrow, winding gorge. The Grand comes in from the north-east through a channel which from the explorer's point of view seems bottomless. Away to the west are lines of cliffs and ledges of rock, with grotesque forms intervening. In the east a chain of eruptive mountains is visible, the slopes covered with pines, the summits coated with snow and the gulches flanked by great crags. Wherever the men looked there were rocks, deep gorges in which the rivers were lost under cliffs, towers and pinnacles, thousands of strangely-carved forms, and mountains blending with the clouds. They passed the junction of the Grand and Green, and on July 21st they were on the Colorado itself. The walls are nearly vertical, and the river is broad and swift, but free from rocks and falls. From the edge of the water to the brink of the cliffs is nearly two thousand feet, and the cliffs are reflected on the quiet surface until it seems to the travellers that there is a vast abyss below them. But the