All this tends to prove that the Paleolithic people of New Jersey were ancestors of the Eskimos. This becomes highly probable when we pursue the subject a little farther. Dr. Abbott has shown, from the similarity of implements, position in which found, and so forth, that the Paleolithic people continued to occupy the country down to comparatively recent times, when Indian relics took their place.70 This is such an important point that we must give his reasons more in detail. Remember that Dr. Abbott speaks from the experience gained by gathering over twenty thousand specimens of stone implements, and paying especial attention to the position in which they were found. The surface soil of that section of New Jersey, where he made his explorations, was formed by the slow decomposition of vegetable and forest growth. In this layer he found great numbers of undoubted Indian implements. The number, however, rapidly decreases the deeper we go in this stratum. This would show that the Indians were late arrivals. Below this surface soil is a stratum of sand, overlying the gravelly beds below and passing into the surface soil just mentioned. In this layer were found great numbers of implements inferior to the Indian types found on the surface, but superior to the Paleolithic specimens described. They are not only inferior in finish to the Indian specimens, but are of different material. They are always formed of argillite. It was further noticed that the number of these rapidly decreased in the layer of surface soil, and are but rarely found on the surface.
Now it might be said that these rude forms were fashioned by Indians when in a rude state of culture, and, as they became more advanced, they learned the superior qualities of flint, and so dropped the use of argillite. But it so happens that we have found several places where were veritable manufactories of Indian implements. It is very significant that we never find one where the workman used both flint and argillite. He always used flint alone. Every thing seems to point to the fact, that the tribes who fashioned the argillite implements were different from the Indian tribes who made the flint implements. It is Dr. Abbott’s conclusions that the former, the descendants of the Paleolithic tribes, were the Eskimos, who, according to these views, must have inhabited the eastern portion of the United States to comparatively recent times.