Upon the tattooed skins of savages such designs may be seen, and the patterns were certainly in use among them before they had any intercourse with white men.

This is the view Humboldt takes of these coincidences.

That both the Egyptian king and the Mexican chief should wear a helmet with a serpent standing out from it just above the forehead, is somewhat extraordinary.
Now, who built Xochicalco?
Writers on Mexico are quite ready with their answer.

They tell us that, according to the Mexican tradition, the country was formerly inhabited by another race, who were called _Tolteca_, or, as we say, _Toltecs_, from the name of their city, _Tollan_, "the Reed-swamp;" and that they were of the same race as the Aztecs, as shown by the names of their cities and their kings being Aztec words; that they were a highly civilized people, and brought into the country the arts of sculpture, hieroglyphic painting, great improvements in agriculture, many of the peculiar religious rites since practised by other nations who settled after them in Mexico, and the famous astronomical calendar, of which I shall speak afterwards.

The particular Toltec king to whom the Mexican historians ascribe the building of Xochicalco was called Nauhyotl, that is to say, "Four Bells," and died A.D.