To the south of the Vermilion Cliffs the last series or zone of plateaus north of the Grand Canyon is found. The summits of these plateaus are of cherty limestone. In the far west we have the Shiwits Plateau covered with sheets of lava and volcanic cones; then climbing the Hurricane Ledge we have the Kanab Plateau, on the southwest portion of which the Uinkaret Mountains stand--a group of dead volcanoes with many black cinder cones scattered about. It is interesting to know how these mountains are formed. The first eruptions of lava were long ago, and they were poured out upon a surface 2,000 feet or more higher than the general surface now found. After the first eruptions of coulees the lands round about were degraded by rains and rivers. Then new eruptions occurred and additional sheets of lava were poured out; but these came not through the first channels, but through later ones formed about the flanks of the elder beds of lava, so that the new sheets are imbricated or shingled over the old sheets. But the overlap is from below upward. Then the land was further degraded, and a third set of coulees was spread still lower down on the flanks, and on these last coulees the black cinder cones stand. So the foundations of the Uinkaret Mountains are of limestones, and these foundations are covered with sheets of lava overlapping from below upward, and the last coulees are decked with cones. Still farther east is the Kaibab Plateau, the culminating table-land of the region. It is covered with a beautiful forest, and in the forest charming parks are found. Its southern extremity is a portion of the wall of the Grand Canyon; its western margin is the wall of the West Kaibab Fault; its eastern edge is the wall of the East Kaibab Fault; and its northern point is found where the two faults join. Here antelope feed and many a deer goes bounding over the fallen timber. In winter deep snows lie here, but the plateau has four months of the sweetest summer man has ever known. On the terraced plateaus three tribes of Indians are found: the Shiwits ("people of the springs"), the Uinkarets ("people of the pine 103 powell-canyons-63.jpg A MIDSUMMERDAY'S DREAM ON THE COLOB. 104 CANYONS OF THE COLORADO. mountains"), and the Unkakaniguts ("people of the red lands," who dwell along the Vermilion Cliffs). They are all Utes and belong to a confederacy with other tribes living farther to the north, in Utah. These people live in shelters made of boughs piled up in circles and covered with juniper bark supported by poles. These little houses are only large enough for half a dozen persons huddling together in sleep. Their aboriginal clothing was very scant, the most important being powell-canyons-64.jpg AN INDIAN VILLAGE.