It is curious that these latter resemblances (as far as I have been able to investigate the subject) disappear in the signs of the Yucatan calendar, though its arrangement is precisely that of the Mexican. Any one interested in the theory of the Toltecs being the builders of Palenque and Copan will see the importance of this point. If the Toltecs ever took the original calendar, with the traces of its Asiatic origin fresh upon it, down into Yucatan with them, it is at any rate not to be found there now.

The Aztec name for an eclipse of the sun is worthy of remark. They called it tonatiuh qualo, literally “the sun’s being eaten.” The expression seems to belong to a time when they knew less about the phenomenon, and had some idea like that of the Asiatic nations who thought the sun was occasionally swallowed up by the great dragon.