CHAPTER XIII.--Archbishop Zumarraga's destruction of Mexican
monuments, writings, documents--Mr. Gallatin's opinion of them--Traditions--two sources of accurate knowledge--Speculations on antiquity--Aztecs--Toltecs--Nahuatlacs--Acolhuans, &c.--Aztecs emigrate from Aztlan--settle in Anahuac--Tables of emigration of the original tribes--Other tribes in the empire, 92