and all these colors clear and bright. A dozen little creeks, dry the greater part of the year, run down through the half circle of exposed formations, radiating from the island center to the rim of the basin. Each creek has its system of side streams and each side stream has its system of laterals, and again these are divided; so that this outstretched slope of rock is elaborately embossed. Beds of different-colored formations run in parallel bands on either side. The perspective, modified by the undulations, gives the bands a waved appearance, and the high colors gleam in the midday sun with the luster of satin. We are tempted to call this Rainbow Park. Away beyond these beds are the Uinta and Wasatch mountains with their pine forests and snow fields and naked peaks. Now we turn to the right and look up Whirlpool Canyon, a deep gorge with a river at the bottom--a gloomy chasm, where mad waves roar; but at this distance and altitude the river is but a rippling brook, and the chasm a narrow cleft. The top of the mountain on which we stand is a broad, grassy table, and a herd powell-canyons-122.jpg RUINS. 180 CANYONS OF THE COLORADO. of deer are feeding in the distance. Walking over to the southeast, we look down into the valley of White River, and beyond that see the far-distant Rocky Mountains, in mellow, perspective haze, through which snow fields shine. June 25.--This morning we enter Split Mountain Canyon, sailing in through a broad, flaring, brilliant gateway. We run two or three rapids, after they have been carefully examined. Then we have a series of six or eight, over which we are compelled to pass by letting the boats down with lines. This occupies the entire day, and we camp at night at the mouth of a great cave. The cave is at the foot of one of these rapids, and the waves dash in nearly to its end. We can pass along a little shelf at the side until we reach the back part. Swallows have built their nests in the ceiling, and they wheel in, chattering and scolding at our intrusion; but their clamor is almost drowned by the noise of the waters. Looking out of the cave, we can see, far up the river, a line of crags standing sentinel on either side, and Mount Hawkins in the distance.