Outside of the building _A_, the narrow ledge separating its rubbish from the eastern wall of circumvallation, a rim 150 m.--192 ft.--long by 32 m.--105 ft.--wide at the south, and 12 m.--40 ft.--at the north, shows the basins _D_ and _F_, respectively 10 m.--33 ft.--and 8 m.--26 ft.--in diameter. They hug the rock of the _mesilla_ very closely, and look completely like the estufas in the court. These buildings, according to Sr. Epifanio Vigil, of Santa Fé, were barns or store-houses (round towers 10 to 11 feet high), in which the Indians preserved their gathered crops, forage, etc. Still, it is not unlikely that they were tanks, built for collecting rain-water.
On the south side of the eastern wing, and so close to it that the heaps of rubbish touch, are two circular depressions surrounded by large masses of stones. They are marked S S on the plan. Their shape and size cannot be accurately determined, and their object is unknown.
[Illustration: PLATE VIII INTERIOR OF BUILDING A, FROM THE SOUTH.]
Nearly the same must be said of a rectangular space, dotted and intersected with foundations and upright beams marked _T T_, and lying out in front of the south wing on the denuded and thinly soiled apron forming the southern spur of the "body" of the _mesilla_. Its eastern line, a double stone wall sunk 0.50 m.--20 in.--into the soil, is 8 m.--26 ft.--long from N. to S. From its southern extremity similar foundations run to the west 37 m.--120 ft.,--thence 8 m.--26 ft.--north, and 37 m.--120 ft.--east back to the first line. Thus a rectangle of 8 m. × 37 m.--26 ft. × 120 ft.--is formed, within whose area, especially in the western portion, upright beams start up in something like a semicircle, which would indicate that the structure was once a building. A metre and a half to the north, a foundation wall runs about 20 m.--66 ft.--E. and W.; and at both of its extremities a corridor ascends towards the south wing of _A_. The nature and object of these fabrics are equally a mystery to me.
Attached to the S.W. corner of the south wing is the annex of which I have already spoken. It is an elevated rectangle of 24 m. × 9 m.--80 ft. × 30 ft., and is clearly divided into compartments of 3-1/2 m. × 3 m.--12 ft. × 11 ft. The whole is not much more than a stone mound of oblong shape, but it contained on its ground-plan 21 chambers. I presume, from the mass of _débris_, that it had an upper story. Its eastern row of cells is a direct continuation of the most westerly row of the S. wing. Due south of this annex, and almost touching it, there are two structures marked _O O_ which are very remarkable. They are octagonal. The most easterly one is best preserved, and appears to be the largest. Its two lateral walls are each 4 m.--13 ft.--long, the transverse 5.34 m.--18 ft.,--and the corners are cut off sharply by intersections of 0.86 m.--3 ft.--in length, so as to give the whole eight sides. The walls are well defined; the corners sharp and still one metre high. They are of the usual thickness. The other structure is so ruined that it appears round. These buildings, according to Sr. Vigil, were store-houses also; and they favor the suspicion that those marked _S S_ south of the east wing had the same shape. As they now appear, they look like the ruins of octagonal towers. The stone-work is like that of the estufas, but they are erected exclusively above the ground, and still cannot have been very high.
