In the face of this possibility as well as the probability that each glyph was painted and implied a year, it is interesting to note that, including the initial glyph, the “Tablet of the Cross” exhibits 108 glyphs on the side to the left and 124 on the side to the right of the spectator=a total of 232; the “Tablet of the Cross II” exhibits 76 to the left and 83 to the right=159; and that in the “Temple of the Sun,” 70 to the left, 159 to the right and 12 in the middle=241. The “Temple of Inscriptions” exhibits the initial series (see Maudslay, Biologia, pt. X, pl. 82) and entire walls covered with glyphs, some of which, as on the tablets enumerated above, are accompanied by numerals whilst others are not. In a future publication I shall submit illustrations of these monuments with the ripened results of my investigations concerning them. For my present purpose it suffices to have produced substantial proofs that the ancient dwellers in Palenque employed the same metaphors, the same cursive method of registration and held the same fundamental principles of organization that have been shown to underlie the civilizations of Peru, Guatemala, Yucatan, and Mexico and still survive amongst the Zuñis and more northern tribes. It is obvious that, at Palenque and the neighboring Menché and Ixkun, an integral civilization, based on these principles, had existed for an incalculable length of time. Strangely enough it seems to form so close a link between Maya and Mexican culture that it almost seems justifiable to surmise that both Maya and Nahuatl languages were spoken in these ancient ruined cities. Proceeding mentally northwards we will not linger at the ruins of Mitla, the name of which seems to indicate that it had lain to the north of a great ancient centre of government, since Mictlan in Nahuatl and Mitnal in Maya both designate the region of the underworld and the north. Reaching the ultimate stage of our mental exploration of the American Continent we now transport ourselves to the Valley of Mexico and, on the site of the ancient capital of Montezuma and his coadjutor, face the three great monolithic monuments which are popularly known as the Calendar Stone, the Stone of Tizoc and Huitzilopochtli. In 1886, at the Buffalo Meeting of the American Association for the Advancement of Science, I presented a “Preliminary Note of an Analysis of the Mexican Codices and Graven Inscriptions,” in which the opinion was advanced that the “Calendar Stone” was identical with the “circular elaborately carved tablets which, according to Padre Duran, were erected in each market-place in ancient Mexico, and were held in great veneration. They were frequently consulted and by them the market-days were regulated.”