f the opening. In this opening the supporting
lintel was formed of a number of poles 2 to 4 inches in diameter,
irregularly placed, sometimes two or three in vertical series with very
little filling between them. This construction has been characterized as
a Norman arch. The opening was originally 1 foot 11 inches at the top
and 4 feet 6 inches high. The bottom is 11/2 inches wider than the top.

The upper opening in the western end of the southern wall is much like
that just described. A small fragment of masonry above the lintel
remains, and this is within a quarter of an inch of the top of the
opening. Above the opening there was a series of rough lintel poles, 3
to 5 inches in diameter, arranged in three tiers with 4 to 6 inches of
filling between them. Prints of these sticks are left in the wall and
show that some of them were quite crooked. Probably they were of
mesquite, obtained from the immediate vicinity. The edges of the
openings were finished with flat sticks, like those described, and its
bottom was 6 inches to a foot above the floor. The height of the opening
was 4 feet 3 inches and its width at the top 2 feet, at the bottom 2
feet 11/2 inches.

The opening immediately below the last described is filled with debris
to the level of the lintel. Above this, however, there is a series of
three tiers of sticks with 6 to 8 inches of masonry between them
vertically, sometimes laid side by side, sometimes separated by a foot
of masonry. Some of these lintel poles, as well as those of the opening
above it, extend 3 feet into the wall, others only a few inches. The
lower sides or bottoms of the holes are washed with pink clay, the same
material used for surfacing the interior walls. Perhaps this was merely
the wetting used to make succeeding courses of clay stick better. This
opening is shown in plate LIX.

Near the middle of the northern wall there are two openings, one above
the other. The upper opening was finished in the same manner as those
already described. But two tiers of poles show above it, though the top
is well preserved, and another tier may be buried in the wall. There are
indications that the opening was closed by a block about 2 feet thick
and flush with the outside. The height of the opening was 4 feet 5
inches, width at top 1 foot 41/2 inches, and at the bottom 1 foot 10
inches. It narrows a little from north to south.

The lower opening is so much broken out that little remains to show its
ch