The proofs, then, of the connection of the Mound Builders with Atlantis are: 

1.  Their race identity with the nations of Central America who possessed Flood legends, and whose traditions all point to an eastern, over-sea origin; while the many evidences of their race identity with the ancient Peruvians indicate that they were part of one great movement of the human race, extending from the Andes to Lake Superior, and, as I believe, from Atlantis to India.

2.  The similarity of their civilization, and their works of stone and bronze, with the civilization of the Bronze Age in Europe.

3.  The presence of great truncated mounds, kindred to the pyramids of Central America, Mexico, Egypt, and India.

4.  The representation of tropical animals, which point to an intercourse with the regions around the Gulf of Mexico, where the Atlanteans were colonized.

5.  The fact that the settlements of the Mound Builders were confined to the valley of the Mississippi, and were apparently densest at those points where a population advancing up that, stream would first reach high, healthy, and fertile lands.

6.  The hostile nations which attacked them came from the north; and when the Mound Builders could no longer hold the country, or when Atlantis stink in the sea, they retreated in the direction whence they came, and fell back upon their kindred races in Central America, as the Roman troops in Gaul and Britain drew southward upon the destruction of Rome.

7.  The Natchez Indians, who are supposed to have descended from the Mound Builders, kept a perpetual fire burning before an altar, watched by old men who were a sort of priesthood, as in Europe.

8.  If the tablet said to have been found in a mound near Davenport, Iowa, is genuine, which appears probable, the Mound Builders must either have possessed an alphabet, or have held intercourse with some people who did. (See “North Americans of Antiquity,” p. 38.) This singular relic exhibits what appears to be a sacrificial mound with a fire upon it; over it are the sun, moon, and stars, and above these a mass of hieroglyphics which bear some resemblance to the letters of European alphabets, and especially to that unknown alphabet which appears upon the inscribed bronze celt found near Rome. (See p. 258 of this work.) For instance, one of the letters on the celt is this, ###; on the Davenport tablet we find this sign, ###; on the celt we have ###; on the tablet, ###; on the celt we have ###; on the tablet, ###.

CHAPTER IV.

THE IBERIAN COLONIES OF ATLANTIS

At the farthest point in the past to which human knowledge extends a race called Iberian inhabited the entire peninsula of Spain, from the Mediterranean to the Pyrenees.  They also extended over the southern part of Gaul as far as the Rhone.