Note 603 — Chapter XIII
Reading edition
According to Powell, Smiths. Rep., 1895, p. 658, the Atlantic slope may be divided into four provinces: Algonquian, Iroquoian, that of the southern part of the United States (Muskhogean), and that of the plains of the Great West. The Pacific slope is split up in its turn into five provinces: North Pacific, Columbia, Interior Basin, California-Oregon, and the Pueblos region which encroaches upon Mexico.