On the Panuca River, near the Gulf of Tampico, Mr. Norman found twenty-five mounds, some of them covering two acres, and built of earth as those in the Mississippi Valley, though some were faced with stones. According to the Smithsonian Report of 1873, across the river from Vera Cruz occurs a locality of mounds covering three square leagues. The pyramids of Papantla and Tuscapan are of solid masonry with steps on the outside. The pyramid of Cholula is truncated, its base being one thousand four hundred and twenty-three feet long, covering forty-four acres. Its perpendicular height is one hundred and seventy-two feet, and its truncated summit contains more than one acre; this was the Mecca of the valley of Anahuac. The hanging gardens of Tezcuco had a summit reached by five hundred and twenty steps and crowned by a fountain. Nezahualeoyotl built a pyramidal temple nine stories high, dedicated to “The Unknown God, the Cause of Causes.” In the ruins of Mitla, Oaxaca, Guingola, and numerous others, we have numerous ruins of different construction; but to say that they are the works of different races of people is saying too much. All the inhabitants of Nahuac were kindred tribes, and spoke the Nahuatl language, though entering the valley at different times in different clans. Winchell states that the Mongoloids entered North America by Behring’s Strait and spread east and southward; that the beginning of this wave is lost in obscurity, but in due succession the Nahuas moved forward. The Toltecs followed and crowded the Nahuas through the Isthmus of Tehuantepec into Yucatan and Central America. The Astecs followed the Toltecs in occupancy. While the Astecs crowded on the Toltecs, these pushed farther the Nahuas, and the Nahuas pressed on the rear of their unknown and mysterious predecessors, and so forth to the borders of Chili. Also another branch of Mongoloids entered South America by the Polynesian route, crossed the Andes, ascended the Atlantic Slope to the Caribbean Sea, crossed to the Antilles and entered North America by the Tortugas and Florida, ascended the Atlantic Slope and began war on the peaceful inhabitants of the Pacific Slope, when the white man arrived and interrupted this symmetrical rotation and sequence of invasion. I beg leave differ with regard to a part of this plan, on grounds adduced further on. The Toltec clan was among the first to enter the Valley of Mexico or Nahua, followed by the Chichimecs, who were succeeded by the seven clans or tribes who dwelt in the valley at the same time, and who probably are connected with “the seven mysterious cities of Cibola” in New Mexico.