Atotonilco, “Hot-water-place,” so called from the hot springs in the neighbourhood.

Soquital, “Clay-place,” from the potter’s clay which abounds in the district. Earthenware is the staple manufacture here.

The book-name for obsidian is itztli, a word which seems to mean originally “sharp thing, knife,” and thence to have been applied to the material knives are made of. Obsidian was also called itztetl, knife-stone. But no Indian to whom I spoke on the subject would ever acknowledge the existence of such a word as itztli for obsidian, but insisted that it was called bizcli, which is apparently the corrupt modern pronunciation of another old name for the same mineral, petztli, shiny-stone.

There is an Aztec word “puztequi” (to break sticks, &c.) which may belong to the same root as “tepuztli.” The first syllable “te” may be “te-tl” (stone).

The researches instituted by Mr. I. Horner in the alluvium near Heliopolis and Memphis (Philos. Transact., 1855 & 1856), although very elaborate, still leave much to be desired before we can arrive at definite conclusions.