1. _The lower house floor zone_ (House No. 1). This zone was composed of blackish sand containing a large amount of charcoal and had an average thickness of about 0.3 feet. It yielded some artifacts. This lower house floor lay just above the surface of Zone IIc (the floodplain surface) from which it was separated by a thin (approximately 0.1-foot thick) lens of compact sandy clay. The thin clay lens was apparently a subsurface formation resulting from the deposition of clay by percolating water along the buried surface of the floodplain. 2. _The upper house floor_ (House No. 2). This zone consisted of a slightly compacted, brownish sand containing a large amount of charcoal and a few artifacts. It lay above the floor of House No. 1, and was separated from it by a layer of clean, sterile, yellowish sand 0.1 to 0.3 feet thick which probably was placed over the burned ruins of the first house to provide a clean floor for the second one. 3. _The embankment of yellow-brown sand encircling the house area._ As was previously pointed out, this member had the appearance of having been banked against the exterior wall of the house while it was still standing. Perhaps this provided extra protection from the winter winds, or its primary purpose may have been to serve as a dike to protect the house when Cypress Creek overflowed its banks. The maximum height of this zone was 2.0 feet above the surface of Zone IIc, upon which it rested. 4. _The final addition to the mound._ This was the sand member which had been mounded over the house ruins. It was virtually sterile of cultural material. OCCUPATIONAL FEATURES The only occupational features discovered at Mound C were the two house patterns. _House No. 1_ The lower house floor at Mound C, designated House No. 1, rested directly on the old surface of the floodplain (Fig. 7). The floor zone was a circular lens of dark gray—almost black—sand with a greasy texture. It averaged 0.4 feet in thickness and measured some 18 feet across. This floor zone contained numerous bits of charcoal and burned clay daub, a few stone chips, mussel shells and garbage bones, and a small number of artifacts.