The springs which pour out their boiling waters are loaded with quartz, and the waters of the springs, flowing away over the rocks, slowly discharge their fluid magma, which crystallizes in beautiful forms and builds jeweled basins that hold pellucid waters. 68 CANYONS OF THE COLORADO. To the north and west of Fremont's Peak are mountain ranges that give birth to rivers flowing into the great Columbia. Conspicuous among these from this point of view is the great Teton Range, with its towering facade of storm-carved rocks; then the Gros Ventre Mountains, the Snake River Range, the Wyoming Range, and, still beyond the latter, the Bear River Range, are seen. Far in the distant south, scarcely to be distinguished from the blue clouds on the horizon, stand the Uinta Mountains. On every hand are deep mountain gorges where snows accumulate to form glaciers. Below the glaciers throughout the entire Wind River Range great numbers of morainal lakes are found. These lakes are gems--deep sapphire waters fringed with emerald zones. From these lakes creeks and rivers flow, by cataracts and rapids, to form the Green. The mountain slopes below are covered with dense forests of pines and firs. The lakes are often fringed with beautiful aspens, and when the autumn winds come their golden leaves are carried over the landscape in clouds of resplendent sheen. The creeks descend from the mountains in wild rocky gorges, until they flow out into the valley. On the west side of the valley stand the Gros Ventre and the Wyoming mountains, low ranges of peaks, but picturesque in form and forest stretch. Leaving the mountain, the river meanders through the Green River Plains, a cold elevated district much like that of northern Norway, except that the humidity of Norway is replaced by the aridity of Wyoming. South of the plains the Big Sandy joins the Green from the east. South of the Big Sandy a long zone of sand-dunes stretches eastward. The western winds blowing up the valley drift these sands from hill to hill, so that the hills themselves are slowly journeying eastward on the wings of arid gales, and sand tempests may be encountered more terrible than storms of snow or hail. Here the northern boundary of the Plateau Province is found, for mesas and high table-lands are found on either side of the river. 69 On the east side of the Green, mesas and plateaus have irregular escarpments with points extending into the valleys, and between these points canyons come down that head in the highlands. Everywhere the escarpments are fringed with outlying buttes. Many portions of the region are characterized by bad lands. These are hills carved out of sandstone, shales, and easily disintegrated rocks, which present many 69 powell-canyons-42.jpg MARBLE BASINS, MAMMOTH HOT SPRINGS, YELLOWSTONE PARK. 70 powell-canyons-43.jpg TERRACED BASINS, MAMMOTH HOT SPRINGS, YELLOWSTONE PABK. MOUNTAINS AND PLATEAUS. 71