North of the Tiguas the Queres had their homes on both sides of the river as far as the great canyon south of San Ildefonso, and an outlying pueblo of the Queres, isolated and quite remote to the west, was Acoma. The most northerly villages on the Rio Grande were those of the Tehuas. Still beyond, but some distance east of the Rio Grande, lay the Pueblos of Taos and Picuris, the inhabitants of which spoke a dialectic variation of the Tigua language of the south. The Tehuas also approached the Rio Grande quite near, at what is called La Bajada; and in about the same latitude, including the former village at Santa Fe, began that branch of the Tehuas known as Tanos, whose settlements ranged from north of Santa Fe as far as the eastern plains and southward to Tajique, where their territory bordered that of the eastern Tiguas. The Rio Grande Queres extended also as far west as the Jemez river; and north of them, on the same stream, another linguistic group, the Jemez, had established themselves and built several villages of considerable size. East of the Rio Grande and southwest-ward from Santa Fe another branch of the Jemez occupied the northern valley of the Rio Pecos. The main interest in this distribution of the Rio Grande Pueblos lies in the fact that it establishes a disruption and division of some of these groups prior to the sixteenth century, but of the cause and the manner thereof there is as yet no documentary information. Thus the Tigua Indians of Taos and Picuris are separated from their southern relatives on the Rio Grande by two distinct linguistic groups, the Tehuas and the Queres; the Jemez and the Pecos were divided from each other by the Queres and the Tanos. That the Piros and the Tiguas should have separated from the main stock might be accounted for by the attraction of the great salt deposits about the Manzano and greater accessibility to the buffalo plains, but that in the Rio Grande valley itself foreign linguistic groups should have interposed themselves between the northern and southern Tiguas and the Jemez and Pecos constitutes a problem which only diligent research in traditions, legends, and the native languages may satisfactorily solve. NEW YORK CITY, March, 1910. * * * * * * Transcriber's Note. Several words purposely occur in accented and non-accented forms. The differing occurrences are retained. Page 20: Misspelling of Sante Fe corrected to Santa Fe. Page 23: The title "Coleccion de Documentos" modified to "Coleccion de Documentos".