lend a strange aspect to the landscape. Besides these necks, there are a few volcanic mountains that tower over all the landscape and gather about themselves the clouds of heaven. Mount Taylor, which stands over the divide on the drainage of the Rio Grande del Norte, is one of the most imposing of the dead volcanoes of this region. Still later eruptions of lava are found here and there, and in the present valleys and canyons sheets of black basalt are often found. These are known as coulees, and sometimes from these coulees cinder cones arise. This valley of the Little Colorado is also the site of many ruins, and the villages or towns found in such profusion were of mueh larger size than those on the San Francisco Plateau. Some of the pueblo-building peoples yet remain. The Zuñi Indians still occupy their homes, and they prove to be a most interesting people. They have cultivated the soil from time immemorial. They build their houses of stone and line them with plaster; and they have many interesting arts, being skilled potters and deft weavers. The seasons are about equally divided between labor, worship, and play. 50 A hundred miles to the northwest of the Zuñí pueblo are the seven pueblos of Tusayan: Oraibi, Shumopavi, Shupaulovi, Mashongnavi, Sichumovi, Walpi, and llano. These towns are built on high cliffs. The people speak a language radically different from that of the Zuñi, but, with the exception of that of the inhabitants of Hano, closely allied to that of the Utes. The people of Hano are Tewans, whose ancestors moved from the Rio Grande to Tusayan during the great Pueblo revolt against Spanish authority in 1680-96. Between the Little Colorado and the Rio San Juan there is a vast system of plateaus, mesas, and buttes, volcanic mountains, volcanic cones, and volcanic cinder cones. Some of the plateaus are forest-clad and have perennial waters and are gemmed with lakelets. The mesas are sometimes treeless, but are often covered with low, straggling, gnarled cedars and pifions, trees that are intermediate in size between the bushes of sage in the desert and the forest trees of the elevated regions. On the western margin of this district the great Navajo Mountain stands, on the brink of Glen Canyon, and from its summit many of the stupendous gorges of the Colorado River can be seen. Central in the region stand the Carrizo Mountains, the Lukachukai 50 powell-canyons-26.jpg PANORAMA IN THE VALLEY OF THE PUERCO. MESAS AND BUTTES. 51 Mountains, the Tunitcha Mountains, and the Chusca Mountains, which in fact constitute one system, extending from north to south in the order named. These are really plateaus crowned with volcanic peaks.