In order to make the force of this argument clear it is necessary to enter somewhat further into details. In the first place, nearly all of the pipes of this type so far discovered have been found in a belt commencing with eastern Iowa, thence running eastward through northern Illinois, through Indiana, and embracing the southern half of Ohio; thence, bending southward, including the valley of the Great Kanawha, eastern Tennessee, and western North Carolina, to the northern boundary of Georgia. It is not known that this type in any of its modifications prevailed or was even in use at any point south of this belt. Pipes in the form of birds and other animals are not uncommon, as may be seen by reference to Pl. XXIII of Jones's Antiquities of the Southern Indians, but the platform is a feature wholly unknown there, as are also the derivatives from it. This is so literally true as to render it strange, even on the supposition here advanced; only a single one (near Nashville, Tenn.), so far as known, having been found in the entire South outside of the Cherokee country. This fact, as is readily seen, stands in direct opposition to the idea advanced by some that the mound-builders of Ohio when driven from their homes moved southward, and became incorporated with the tribes of the Gulf States, as it is scarcely possible such sturdy smokers as they must have been would all at once have abandoned their favorite pipe. Some specimens have been found north and east of this belt, chiefly in New York and Massachusetts, but they are too few to induce the belief that the tribes occupying the sections where they were found were in the habit of manufacturing them or accustomed to their use; possibly the region of Essex, Mass., may prove to be an isolated and singular exception. How can we account for the fact that they were confined to this belt except upon the theory that they were made and used by a single tribe, or at most by two or three cognate tribes? If this be admitted it gives as a result the line of migration of the tribe, or tribes, by whom they were made; and the gradual modification of the form indicates the direction of the movement. In the region of eastern Iowa and northern Illinois, as will be seen by reference to the Proceedings of the Davenport Academy of Natural Sciences [Footnote: Vol. 1, 1876, Pl. IV.] and the Smithsonian Report for 1882, [Footnote: Smithsonian Report for 1882 (1884), Figs. 4-8, pp. 689-692] the original slightly-carved platform base appears to be the only form found. Moving eastward from that section, a break occurs, and none of the type are found until the western border of Ohio is reached, indicating a migration by the tribe to a great distance. From this point eastward and over a large portion of the State, to the western part of West Virginia, the works of the tribe are found in numerous localities, showing this to have long been their home.