In the roof construction previously described rushes or canes formed the
third member, and in the northern room the wall is rough immediately
above the impressions of rushes, and projects 8 to 12 inches. This
feature is well marked; it may be a remnant of the clay covering of
floor or roof, but it is almost too thick for that and possibly marks
the position of a low bench, as previously suggested. The bottoms of the
openings come just to or a trifle above the top of this marking.

[Illustration: Pl. LVII: Blocked Opening in West Wall.]

The walls of the western room were smoothly finished and the finish is
well preserved, but here, as in the northern room, the exterior wall of
the middle room was not finished above the second roof level, and there
is no doubt that two stories above the ground were the maximum height of
the western rooms, excluding the parapet. The eastern wall presents a
marked double convexity while the western wall is comparatively straight
in a horizontal line, but markedly concave vertically above the first
roof level. Below this level it is straight. The floor beams were from 3
to 6 inches in diameter. The marks in the eastern wall show that the
beams projected into it to a nearly uniform depth of 1 foot 4 inches. In
the western wall, however, the depth varies from 1 to 3 feet. The beams
which entered the eastern wall were very irregularly placed, the line
rising in the center some 3 or 4 inches. The beams of the second roof
level show the same irregularity and in the same place; possibly this
was done to correct a level, for the same feature is repeated in the
eastern room.

The walls of the southern room are perhaps better finished and less well
constructed than any others in the building. The beam holes in the