plateau tribes are the Ute, Shoshoni, Mono and Luiseno. _Yuman_, from Arizona to Lower California. From the data available J. R. Swanton and R. B. Dixon draw the following conclusions[802]. "It appears that the origin of the tribes of several of our stocks may be referred back to a swarming ground, usually of rather indefinite size but none the less roughly indicated. That for the Muskhogeans, including probably some of the smaller southern stocks, must be placed in Louisiana, Arkansas and perhaps the western parts of Mississippi and Tennessee, although a few tribes seem to have come from the region of the Ohio. That for the Iroquoians would be along the Ohio and perhaps farther west, and that of the Siouans on the lower Ohio and the country to the north including part at least of Wisconsin. The dispersion area for the Algonquians was farther north about the Great Lakes and perhaps also the St Lawrence, and that for the Eskimo about Hudson Bay or between it and the Mackenzie river. The Caddoan peoples seem to have been on the southern plains from earliest times. On the north Pacific coast we have indications that the flow of population has been from the interior to the coast. This seems certain in the case of the Indians of the Chimmesayan stock and some Tlinglit subdivisions. Some Tlinglit clans, however, have moved from the neighbourhood of the Nass northward. Looking farther south we find evidence that the coast Salish have moved from the inner side of the coast ranges, while a small branch has subsequently passed northward to the west of it. The Athapascan stock in all probability has moved southward, sending one arm down the Pacific coast, and a larger body presumably through the Plains which reached as far as northern Mexico. Most of the stocks of the Great Plateau and of Oregon and California show little evidence of movement, such indications as are present, however, pointing toward the south as a rule. The Pueblo Indians appear to have had a mixed origin, part of them coming from the north, part from the south. In general there is to be noted a striking contrast between the comparatively settled condition of those tribes west of the Rocky mountains and the numerous movements, particularly in later times, of those to the east." With regard to the Pacific coast Dixon[803] notes that it "has apparently been occupied from the earliest times by peoples differing but little in their culture from the tribes found in occupancy in the sixteenth century. Cut off from the rest of the country by the great chain of the Cordilleras and the inhospitable and arid interior plateaus, the tribes of this narrow coastal strip developed in comparative seclusion their various cultures, each adopted to the environment in which it was found....