The vocabularies to which Steward refers were taken from Northern Paiute at Mill City, a town southwest of Winnemucca, Nevada, and at George's Creek, in Owens Valley, California. It is probable that correspondences would have been even closer if vocabularies had been taken among the Northern Paiute of Oregon, for Fort Hall Bannock informants specifically stated that their language was more akin to that of the Oregon Paiute; the Pyramid Lake people were said to "talk fast" or "talk funny." The frequent designation of the Oregon Paiute as "Bannock" by both Bannock and Shoshone at Fort Hall Reservation bespeaks the linguistic similarity or virtual identity of the languages of the respective groups. As for Shoshone and Bannock, the two languages were not sufficiently similar to be mutually intelligible, although there are a great many cognate words. However, they were not so far removed from one another as to make bilingualism difficult. There was considerable bilingualism among the population of the Fort Hall plains. GENERAL DISTRIBUTION OF POPULATION The following division of the Shoshone-Bannock population of Idaho into six main groups is admittedly arbitrary, although to a certain extent the sectors conform to actual sociopolitical groups or to populations designated by certain characteristics recognized by the Indians themselves. Proceeding from west to east, these are: (1) the population of the Boise and Weiser River valleys; (2) the Shoshone Indians of the middle course of the Snake River between Glenn's Ferry and Shoshone Falls and in the interior on both sides of the river; (3) the Shoshone of the Sawtooth Mountains, west of the Lemhi River, Idaho; (4) the population of Bannock Creek, Idaho, and south therefrom to Bear River; (5) the Shoshone and Bannock of the Fort Hall plains on the upper Snake River; and (6) the Shoshone Indians of the Lemhi River. It will be seen that the Shoshone population of Idaho was by no means a unitary one, either socially or culturally. The people of these six areas were not politically interrelated, nor were the populations of each area integrated social or political units, although the Fort Hall and Lemhi River people were more highly organized than those of other areas. On the contrary, the Indians subsumed under each of the six divisions primarily consist of people who lived under similar ecological conditions and dwelt in geographical contiguity. Some shared roughly the same nomadic pattern and united upon occasion for diverse reasons. The populations represented by our sixfold division interacted more frequently for economic, social, and religious purposes with people within the area than they did with those from other areas.