Such is the date on the inscription. Now, what is intimated to have occurred on that date? The clew to this is furnished by the figure of the giant. It represents an ogre of horrid mien with a death’s-head grin and formidable teeth, his hair wild and long, the locks falling down upon the neck. Suspended on the breast as an ornament is the bone of a human lower jaw, with its incisor teeth. The left leg is thrown forward as in the act of walking, and the arms are uplifted, the hands open, and the fingers extended as at the moment of seizing the prey or the victim. The lines about the umbilicus represent the knot of the girdle which supported the _maxtli_ or breechcloth. There is no doubt as to which personage of the Aztec pantheon this fear-inspiring figure represents. It is _Tzontemoc Mictlantecutli_, “the Lord of the Realm of the Dead, He of the Falling Hair,” the dread god of death and the dead. His distinctive marks are there, the death’s-head, the falling hair, the jaw bone, the terrible aspect, the giant size. We possess several chronicles of the empire before Cortes destroyed it, written in the hieroglyphs which the inventive genius of the natives had devised. Taking two of these chronicles, one known as the Codex Telleriano-Remensis, the other as the Codex Vaticanus, I turn to the year numbered “ten” under the sign of the rabbit and I find that both present the same record which I copy in the following figure. [Illustration: FIG. 99.--The Emperor Ahuitzotzin.] The figure so copied is entitled “Extract from the Vatican Codex,” which is a slight error. It is a copy from the Codex Telleriano-Remensis, Kingsborough, I, Pt. 4, p. 23, year 1502, which is here reproduced as Fig. 99. The record in the Vatican Codex, Kingsborough, II, p. 130, differs in some unimportant details. It may also be noted that in the text relating to the Codex Telleriano-Remensis, Kingsborough, VI, p. 141, the word Ahuitzotl is given as “the name of an aquatic animal famous in Mexican mythology.” The present opportunity is embraced to recognize the acumen displayed by Prof. Brinton in his interpretation of the petroglyph. He proceeds as follows: