(1) The model of half a bivalve shell in light-green jadeite, very well executed and polished both inside and out (pl. 16, _a_). On its outer surface, following the contour of the outer edge, are seven glyphs, the chief component of each of which is a grotesque human face.[39] [Illustration: FIG. 35.--Inscription on mask, plate 16, _b_.] (2) A small mask of light-green jadeite, well polished on both surfaces, measuring approximately 7 cm. in both diameters (pl. 16, _b_). Inscribed on the forehead in shallow lines are the glyphs shown in figure 35, somewhat enlarged from the actual size. Around the edge of the lower half of the mask are seven minute perforations, while running across the back of the forehead from ear to ear is a larger hole, evidently used for suspension. No doubt this mask was used as a breast ornament, similar to those portrayed in the codices and on the monoliths, the small holes being intended for the suspension of the alligator-head beads found with the mask, which again may have been connected along their outward-pointing snouts by the cylindrical beads. (3) An ax head, or celt, of light-green stone, finely polished throughout (pl. 16, _c_), 21 cm. in length by 6.5 cm. in breadth at the cutting edge. One side is engraved with hieroglyphs done in shallow lines, much less carefully and neatly than those on the shell. The lower two-thirds of the engraved side have evidently been subjected to considerable attrition, as the surface of the stone, especially along the lower third of the ax, has been so worn away as to render the lines almost undecipherable. This inscription, somewhat smaller than the original, is shown in figure 36. With these engraved objects were a number of cylindrical beads, pierced in their long diameter, made of very pretty mottled light and dark green jade, well polished. They varied from 1.2 to 1.6 cm. in length, and the substance of the stone from which they were made was distinctly crystalline on fracture. With them were a number of small alligator heads, made of similar stone and about the same size as the beads, pierced at the base of the skull for suspension, six celts of green and chocolate-colored stone, all finely polished, varying from 9 to 18 cm. in length, and a circular disk of iron pyrites 8 cm. in diameter by 5 mm. in thickness. This object was milled round the edges like a coin and perforated in the center. With it was the broken half of a similar ornament; probably both of these had been used as ear ornaments. Trenches were dug through this mound in all directions, but nothing further was found therein. MOUND NO. 12