Copper is found to-day in nearly all the states of the Mexican Republic. We abstain, therefore, from quoting the localities. But as far as our information goes, no writer or historian has stated where Cortes and before him the natives themselves found it. To investigate this matter might be of direct utility, at least. We intend to use a source hitherto little explored, but which for the history of Mexico is of greatest importance, the picture tables, called the Codices Mexicana. These collections contain representations of their historical, religious, social and commercial life. The writer of this article has made himself familiar with these sources, expecting to find in them disclosures about the location of the ancient copper mines, as soon as he could discover what copper was called in the language of the natives. The answer comes in this connection.

The Mexicans had the habit of giving a name to their towns and districts from the objects which were found in abundance in their neighborhood. Therefore, copper regions ought to bear a name which related to this mineral.

In Lord Kingsborough’s Collection, Vol. V., pages 115–124, there are two printed alphabetical indices of the names of all the towns, whose hieroglyphic symbol, or, as we term it, whose coat of arms, is represented in the Codex Mendoza, to be found in Vol. I. of the same collection, pages 1–72. This Codex is arranged in three sections. The first shows the picture-annals of the ancient Aztec-Kings, and the cities which they conquered (pages 1–17). The second reproduces again the coats of arms of these cities, but gives in addition the pictures of all the objects of tribute which these cities had to pay. The third section exhibits an illustration of how Mexican children were trained from infancy up to their 15th year. Sections first and second will claim our interest, exclusively.

Copper, we learn from the Dictionary of Molina[[5]] was named in the language of the Nahoa speaking natives, tepuzque.[[6]] Upon searching in the above quoted Codices, we find three names of towns which are compounds of this word tepuzque. Their names appear in the following form: Tepoztla, Vol. I., page 8, fig. 2, and the same name on page 26, fig. 13. Tepoztitla, page 42, fig. 10, and Tepozcolula, page 43, fig. 3.

The cuts 1, 2, 3 and 4, are faithful reproductions of the coats of arms belonging to these towns.

Cut 1.
Tepoztla.

Cut 2.
Tepoztla.