east, along the course of the Eio Grande in New Mexico, are the pueblos of the Piros; these, too, aside from their distant situation, give no clue. The region, clothed with magnificent fir-trees, between the Gila and the Rio Colorado Chiquito (the Little Colorado) in western Arizona, the noble-mountain landscape of the Sierra Blanca, the wild and precipitous rocks of the Escudilla and Sierra del Dátil, the still sparsely populated huntinggrounds between the Rio Grande and the Rito Quemado were uninhabited, and only the Apaches and their northern relatives, the present Navajos, swept through them from time to time on hunting and predatory expeditions.
An undulating, often bare, highland begins in the northern part of the Escudilla, the average height of which is 6000 feet above the sea. One may wander for days at a time on the mesas, as if in a large garden of low, spreading junipers. At rare intervals a valley cuts through the uniform level, the borders of which sometimes present picturesque rocks of inconsiderable height. This region is bounded on the north by the valley of the western Rio Puerco. In the east it passes through the continental watershed of what is called the "Atlantic and Pacific Divide "into the more broken heights of San Estévan de Acoma to the Cerros Mohinos, not far from the Rio Grande. In the west it flattens out, without losing in height, into the treeless district of the Little Colorado. This desert country, visited by the summer's heat and the winter's cold, situated in New Mexico and on the borders of Arizona, is penetrated by a small river which rises
