The floor joists were 3 to 4 inches in diameter, and as a rule projected into the wall but 5 to 8 inches.  In some places in the northern wall, however, they extended into the masonry as much as 3 feet 3 inches.  The beams were doubtless cut by guess, at the place where trees of the requisite size were found, according to the method employed by the Pueblo Indians today, and if, as supposed, the northern room was built after the rest of the structure, the excess in length would necessarily be found in the northern wall.

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 southern wall are regular, those in the northern wall less so.  The beams used averaged a little smaller than those in the other rooms, and there is no trace whatever in the overhanging wall of the use of rushes or canes in the construction of the roof above.  The walls depart considerably from vertical plane surfaces; the southern wall inclines fully 12 inches inward, while in the northeastern corner the side of a doorway projects fully 3 inches into the room.  The broken condition of the southern wall indicates carelessness in construction.  The weakest point in pise construction is of course the framing around openings.  In the southern wall the openings, being doubtless the