Note 33 — MOULDING

From the earliest periods Southwestern pottery has been made in more or less the manner just described, that is, by the addition of successive rings of clay. During prehistoric times, however, there was developed a ware usually known as “corrugated”, in the building of which the roll was so lengthened as to become a spiral coil. The roll of paste forming the coil was very thin, averaging a little over one-quarter of an inch in diameter; and it was applied to the outside of the temporary rim, as at Zuñi (see pl. 29, b), instead of to the inside, as at San Ildefonso. Furthermore, the junctions between the coils were not obliterated on the exterior of the vessel, thus producing a ridged or corrugated effect. Corrugated pottery was principally used for cooking pots (see Holmes, 1886, p. 273).