s on the ground plan, northward from the
northeastern corner and eastward from the southeastern corner. These
walls doubtless formed part of the original structure and were probably
erected with it; otherwise the corners of the main structure would not
have been torn out or strained enough to fall before the rest of the
building was affected.

It is not likely that the main building originally stood alone as at
present. On the contrary there is every reason to suppose that it was
connected with other buildings about 75 feet east of it, now marked by a
bit of standing wall shown on the map (plate LI), and probably also with
a small structure about 170 feet south of it, shown in plate LIV. These
connections seem to have been by open courts inclosed by walls and not
by continuous buildings. The court east of the ruin is well marked by
the contours and seems to have been entered by a gateway or opening at
its southeastern corner.

_Dimensions._

It is probable that the area immediately adjacent to the ruin, and now
covered by mounds, carried buildings of the same time with the main
structure and was occupied contemporaneously with it or nearly so. This
area, well marked on the map, measures about 400 feet north and south,
and 240 feet east and west. It is not rectangular, although the eastern
and western sides, now marked by long ridges, are roughly parallel. The
northeastern corner does not conform to a rectangular plan, and the
southern side is not more than half closed by the low ridge which
extends partly across it. This area is doubtless the one measured in
1776, by Padre Font, whose description, was copied by later writers, and
whose measurements were applied by Humboldt and others to the ruin
itself. Font gave his measurements as those of a circumscribing wall,
and his inference has been adopted by many, in fact most, later writers.
A circumscribing wall is an anomalous feature, in the experience of the
writer, and a close inspection of the general map will show that Font's
inference is hardly justified by the condition of the remains today. It
seems more likely that the area in question was covered by groups of
buildings and rows of rooms, connected by open courts, and forming an
outline sometimes regular for a considerable distance, but more often
irregular, after the manner of pueblo structures today. The long north
and south ridge which forms the southeastern corner of the area, with
other ridges extending w