On an elevated plateau 7000 ft. above the sea, 68 m. due SE. of Mexico, is the third city of the republic, and a beautiful town, with Doric cathedral, theological, medical, and other schools, a museum, and two libraries; cotton goods, iron, paper, and glass are manufactured; it is a commercial city, and carries on a brisk trade. Is the name also of a Colorado town on the Arkansas River; it is in a rich mineral district, and is engaged in the manufacture of steel and iron wares.