YELLOW STONE

a riv. of the U.S.A., rises in the Shoshone Mts. of N.W. Wyoming, and flows through the Yellow stone National Park, entering Yellow stone e at an elevation of 7,740 feet above the level of the sea. It pours down the two cascades known as the Upper and Lower Falls, and then pa es through a beautiful gorge called the Grand Canon. It joins the Mi ouri River from the n.&®. at Burford. Its chief tributaries are the Big Horn, Powder, and Rosebud. Total length oe m., of which nearly 800 are navigable. | in N.w. corner of Wyoming, U.S. (45° N., 110° W.), a wonderful region of canyons, cataracts, hot springs, geysers, and mud volcanoes; Yellow stone R. pa es through Grand Canon, and near it, towards s. of park, stands a calcareous ma of terraces with many colored rocks, known as White Mt. Geysers are finest in world, and are most remarkable feature of district. Most of area is thickly forested. Region was set apart as a national park by Congre (1872), and is nearly rectangular in form, being 54 miles Bm. and w. by 62 miles n. and s. A body of mounted men is employed to prevent destruction of forests and wild animals; result is that many species of animals which have elsewhere been exterminated have found refuge here.