Institute of A merica. Under the auspices of t WsS chool the author of the present paper has since July, 1908, been engaged continuously in a study of the group of obviously related languages spoken in the Rio Grande drainage area of New Mexico which Powell has termed the Tanoan. The Tanoan Languages and Taos Pueblo In the area drained by the Rio Grande which is now known as northern and central New Mexico there are at present eighteen Indian Pueblos. We follow the Indian custom in enumerating these villages, beginning with those farthest north or northwest: Taos, Picuris, San Juan, Santa Clara, San I ldefonso, Nambe, Pojoaque, Tesuque, Cochiti, Santo Domingo, San Felipe, Jemez, Sia, Santa A na, Sandia, I sleta, Laguna, A coma. In addition to these should be mentioned Pecos pueblo, located on the Rio Pecos and abandoned in 1837. There are at Jemez a few aged persons who still retain a knowledge of the dialect of Pecos. Four villages whose inhabitants migrated from this area in historic times should also be included here. These are :S enecu, Isleta del Sur, and Socorro, established at the time of the Pueblo Indian revolt of 1680 south of the present city of El Paso, Texas, and Hano, founded in 1700 beside the Hopi villages of northeastern A rizona. The speech of each pueblo is practically a unit, variations presented by division, clan, family, or individual being here ignored ;but no two of the pueblos have the same dialect, although the degree of linguistic diversity varies greatly. Omitting Cochiti, Santo Domingo, San Felipe, Sia, Santa A na, Laguna, and A coma, seven villages whose language forms a close unit and has been called Keresan, our preliminary survey leads us to suggest the following classification of the dialects of the remaining pueblos. A. Tiwa language: (1) Taos and Picuris dialects. (2) Sandia, I sleta, and Isleta del Sur dialects. Pronounce (Typographical errors above are due to OCR software and don't occur in the book.)