be filled up from material washed from the mounds, giving eventually a
continuous slope from the base of the mounds to the edge of the terrace.

On the eastern margin of the map and in the southeastern corner two
small and sharply defined mounds, differing in character from any others
of the group, are represented. That shown on the eastern margin rises
about 6 feet and the other about 10 feet above the surrounding level,
and both stand out alone, no other remains occurring within a hundred
yards in any direction. These mounds seem a thing apart from the other
remains in the group; and it is probable that they represent the latest
period in the occupancy of this site, or possibly a period subsequent to
its final abandonment as a place of residence. Analogous remains occur
in conjunction with some large ruins in the north, and there they
represent single rooms, parts of the original structure kept in a fair
state of preservation by occasional repairs while the remainder of the
village was going to ruin, and used as farming outlooks long after the
site was abandoned as a place of residence. As these farming outlooks
have been discussed at some length in another paper[1] it is not
necessary here to enlarge upon their function and the important part
they play in Pueblo architecture. If the high mounds in question mark,
as supposed, the sites of farming outlooks such as those which are found
in the north, they indicate that the occupancy of the region in which
they occur was continued after the abandonment of the Casa Grande
structure by the people who built it or by people of similar habits and
customs.

[Footnote 1: A Study of Pueblo Architecture; 8th Ann. Rep. Bur.
Eth., 1891, pp. 86, 227, and elsewhere.]

An inspection of the map will show a number of depressions, some of