In the second story, or middle room of the middle tier, there were no
openings except the doorway in the eastern wall and two small orifices
in the western wall. In the middle of this wall there is a niche about
18 inches below the roof, and a foot below this is a round-cornered
opening measuring about 7 by 8 inches extending through the wall. This
opening was on a level with another in the western wall of the western
room, and commanded a far-reaching though contracted view toward the
west. Below and a little northward is a similar though somewhat larger
opening corresponding to an opening in the western wall of the western
room.

[Illustration: Fig. 330.--Elevations of walls, middle room.]

The upper doorway in the western wall of the western room is much broken
out, but the top can still be traced. It was 4 feet 5½ inches in height
and 1 foot 11 inches wide at top. The opening was blocked by solid
masonry built into it and completely filling it up to within 10 inches
of the top. This upper space, which is on a level with the upper hole in
the middle room, seems to have been purposely left to allow an outlook
from that room. The filling block is level on top and flush with the
wall inside and out. At a height of 12 inches above the lower edge of
the floor beams below it, and perhaps 3 inches above the floor, is the
lower edge of a roughly square opening a foot across, cut out from the
block itself and inclined slightly downward toward the exterior. It was
plastered and smoothly finished. This opening corresponds to the one in
the middle room already described. This filling block, with the orifice
under discussion, is shown in figure 330, and in detail in plate LVII.

The lower doorway, shown in figure 330, is much broken out, and although
now but 2 feet 1½ inches wide at its narrowest part, no trace of the