Traces of communication between the two peoples are to be found in abundance, but nothing to warrant our holding that either people took its civilization bodily from the other.

My excuse for entering into these details must be that some of the facts I have to offer are new.
A bas-relief at Kabah, described in Mr.Stephens' account of his second journey, bears considerable resemblance to that on the so-called "sacrificial stone" of Mexico; and the warrior has the characteristic Mexican _maquahuitl_, or "Hand-wood," a mace set with rows of obsidian teeth.
A curious ornament is met with in the Central American sculptures, representing a serpent with a man's face looking out from between its distended jaws; and we find a similar design in the Aztec picture-writings, sculptures, and pottery.
A remarkable peculiarity in the Aztec picture-writings is that the personages represented often have one or more figures of tongues suspended in mid-air near their mouths, indicating that they are speaking, or that they are persons in authority.

Such tongues are to be seen on the Yucatan sculptures.
One of the panels on the Pyramid of Xochicalco seems to have a bearing upon this subject, I mean that of the cross-legged chief, of which I have just spoken.
In the first place, sitting cross-legged is not an Aztec custom.

I do not think we ever saw an Indian in Mexico sitting cross-legged.

In the picture-writings of the Aztecs, the men sit doubled up, with their chins almost touching their knees; while the women have their legs tucked under them, and their feet sticking out on the left side.