It is probable that in many cases the support was not a mold in the ordinary sense, but was simply a rounded object of small size held in one hand while the base of the vessel was formed over it by the other. Rounded pebbles, or the mushroom-shaped objects of clay sometimes found in the mounds, would have served the purpose perfectly. Trowels, paddles, stamps, polishing-stones, and other implements were used in finishing. Baskets were also used as molds, and pliable fabrics, such as nets and coarse cloths, were employed in some sections. The methods of baking have apparently not been described in much detail by early writers, but the ware itself bears the marks of those simple processes known to our modern tribes. It is highly probable that the work was done by the women, and that each community had its skilled potters, who built and baked the ware in the open air, going through those simple mummeries that accompany the work among most primitive peoples. MATERIAL.--The material employed was usually a moderately fine-grained clay, tempered, in a great majority of cases, with pulverized shells. The shells used were doubtless obtained from the neighboring rivers. In many of the vessels the particles are large, measuring as much as one-fourth or even one-half of an inch in width, but in the more elegant vases the shell has been reduced to a fine powder. Powdered potsherds were also used. The clay was, apparently, often impure or loamy. It was, probably, at times, obtained from recent alluvial deposits of the bayous--the sediment of overflows--as was the potter's clay of the Nile. There is no reason for believing that the finer processes of powdering and levigation were known. A slip or wash of very finely comminuted clay was sometimes applied to the surface of the vessel. The walls of the vessels are often thick and uneven, and are always quite porous, a feature of no little importance in the storage of drinking-water, but one resulting from accident rather than from design. COLOR.--The paste of this ware presents two marked varieties of color, a dark and a light hue. In a majority of cases it is dark, ranging from a rich black to all shades of brown and gray. The lighter tints are usually warm ochrey grays, rarely approaching reddish or terra-cotta hues. It is highly probable that the differences of color were, to some extent, intentionally produced, and that the material or methods of firing were regulated in a way to produce one tint or another at pleasure. This theory is confirmed by the fact that certain forms of vases are pretty generally dark, while certain other forms are as uniformly light--the latter in nearly all cases being used for the application of color, or of designs in color.