Casas Grandes—Chihuahua.
The material of the walls is sun-dried blocks of mud and gravel, about twenty-two inches thick, and of irregular length, generally about three feet, probably formed and dried in situ. Of this material and method of construction more details will be given in the following chapter on the New Mexican region, where the buildings are of a similar nature. The walls are in some parts five feet thick, but were so much damaged at the time of Mr Bartlett's visit that nothing could be ascertained, at least without excavation, respecting their finish on either surface. The author of the account in the Album states that the plaster which covers the blocks is of powdered stone, but this may be doubted. There is no doubt, however, that they were plastered on both interior and exterior, with a composition much like that of which the blocks were made; Escudero found some portions of the plaster still in place, but does not state what was its composition. The remains of the main structure, which was rectangular in its plan, extend over an area measuring about eight hundred feet from north to south, and two hundred and fifty from east to west.[X-66] Within this area are three great heaps of ruined walls, but low connecting lines of débris indicate that all formed one edifice, or were at least connected by corridors. On the south the wall, or the heaps indicating its existence, is continuous and regular; of the northern side nothing is said; but on the east and west the walls are very irregular, with many angles and projections.
Ground Plan—Casas Grandes.
The ground plan of the whole structure could not be made out, at least in the limited time at Mr Bartlett's disposal. He found, however, one row of apartments whose plan is shown in the cut. Each of the six shown is ten by twenty feet, and the small structure in the corner of each is a pen rather than a room, being only three or four feet high. In the Album, the usual dimensions of the rooms are given as about twelve and a half by sixteen and a half feet; one very perfect room, however, being a little over four feet square. Bartlett found many rooms altogether too small for sleeping apartments, some of great size, whose dimensions are not given, and several enclosures too large to have been covered by a roof, doubtless enclosed courtyards. One portion of standing wall in the interior had a doorway narrower at the top than at the bottom, and two circular openings or windows above it. The explorer of 1842 speaks of doorways long, square, and round, some of them being walled up at the bottom so as to form windows.
Not a fragment of wood or stone remained in 1851; nor could any holes in the walls be found which seemed to have held the original floor-timbers; and consequently there was no way of determining the number of stories. In 1842, however, a piece of rotten wood was found, over a window as it seems; and the people in the vicinity said they had found many beams. No traces of any stairway was, however, visible. No doubt the earlier accounts spoke of wooden stairways, or ladders, because such means of entrance were commonly used in similar and more modern buildings in New Mexico; later writers converted the conjectures of the first visitors into actual fact; hence the galleries of wood and exterior stairways spoken of by Wizlizenus and others.
It is difficult to determine where the idea originated that the structure had three stories; for the walls still standing in places to a height of fifty feet, notwithstanding the wear of three centuries at least, would certainly indicate six or seven stories rather than three. These high walls are always in the interior, and the outer walls are in no part of a sufficient height to indicate more than one story. The general idea of the structure in its original condition, formed from the descriptions and views, is that of an immense central pile—similar to some of the Pueblo towns of New Mexico, and particularly that of Taos, of which a cut will be given in the following chapter—rising to a height of six or seven stories, and surrounded by lower houses built about several courtyards, and presenting on the exterior a rectangular form. Notwithstanding the imperfect exploration of this ruin and its advanced state of dilapidation, the reader of the following chapter will not fail to understand clearly what this Casa Grande was like when still inhabited; for there is no doubt that this building was used for a dwelling as well as for other purposes, and this may be regarded as the first instance in the northward progress of our investigation where any remains of authentic aboriginal dwellings have been met.
