covered by remains of walls should be assigned to the Casa Grande proper, for this structure is but a portion of a large group of ruins.

So far as known to the writer no accurate plan of the Casa Grande ruin proper has hitherto been made, although plans have been published; and very few data concerning the group of which it forms a part are available. It would seem, therefore, that a brief report presenting accurate plans and careful descriptions may be of value, even though no pretention to exhaustive treatment is made.

HISTORY AND LITERATURE.

The earlier writers on the Casa Grande generally state that it was in ruins at the time of the first Spanish invasion of the country, in 1540, and quote in support of this assertion Castañeda's description of a ruin encountered on the march.1 Castañeda remarks that, "The structure was in ruins and without a roof." Elsewhere he says that the name "Chichilticale" was given to the place where they stopped because the monks found in the vicinity a house which had been inhabited by a people who came from Cibola. He surmises that the ruin was formerly a fortress, destroyed long before by the barbarous tribes which they found in the country. His description of these tribes seems to apply to the Apache.

The geographic data furnished by Castañeda and the other chroniclers of Coronado's expedition is very scanty, and the exact route followed has not yet been determined and probably never will be. So far as these data go, however, they are against the assumption that the Chichilticale of Castañeda is the Casa Grande of today. Mr. A. F. Bandelier, whose studies of the documentary history of the southwest are well known, inclines to the opinion that the vicinity of Old Camp Grant, on the Rio San Pedro, Arizona, more nearly fill the descriptions. Be this as it may, however, the work of Castañeda was lost to sight, and it is not until more than a century later that the authentic history of the ruin commences.

In 1694 the Jesuit Father Kino heard of the ruin, and later in the same year visited it and said mass within its walls. His secretary and usual companion on his missionary journeys, Mange by name, was not with him on this occasion, but in 1697 another visit was paid to the ruin and the description recorded by Mange2 in his diary heads the long list of accounts extending down to the present time.3 Mange describes the ruin as consisting of—

A large edifice, the principal room in the center being four stories high, and those adjoining it on its four sides three stories, with walls 2 varas thick, of strong argamaso y baro (adobe) so smooth on the inside that they resemble planed boards, and so polished that they shine like Puebla pottery.

Mange also gives some details of construction, and states that in the immediate vicinity there were remains of twelve other buildings, the walls half fallen and the roofs burned out.

Following Mange's account there were a number of descriptions of no special value, and a more useful one written by Padre Font, who in 1775 and 1776 made a journey to Gila and Colorado rivers and beyond. This description4 is quite circumstantial and is of especial interest because it formed the basis of nearly all the accounts written up to the time when that country came into our possession. According to this authority—

The house forms an oblong square, facing exactly the four cardinal points, and round about it there are ruins indicating a fence or wall which surrounded the house and other buildings. The exterior or plaza extends north and south 420 feet and east and west 260 feet.

Font measured the five rooms of the main building, and recorded many interesting details. It will be noticed that he described a surrounding wall inclosing a comparatively large area; and nearly all the writers who published accounts prior to our conquest of the country in 1846 based their descriptions on Font's journal and erroneously applied his measurement of the supposed circumscribing wall to the Casa Grande proper.

The conquest of the country by the "Army of the West" attracted attention anew to the ruin, through the descriptions of Colonel Emory and Captain Johnston. The expedition passed up the Gila valley, and Colonel Emory, in his journal, gives a fanciful illustration and a slight description. The journal of Captain Johnston contained a somewhat better description and a rough but fairly good sketch. The best description of that period, however, was that given by John Russell Bartlett, in his "Personal Narrative," published in 1854.

Bartlett observed that the ruin consists of three buildings, "all included within an area of 150 yards." He described these buildings and gave ground plans of two of them and elevations of the principal structure. He also gave a translation of a portion of Font's journal, as well as the previous description of Mange. He surmised that the central room of the main building, and perhaps the whole structure, was used for the storage of corn.

Bartlett's account held place for nearly thirty years as the main reliance of compilers, and it forms today one of the most circumstantial and comprehensive descriptions extant. Other descriptions appeared at intervals of a few years, some compiled from Bartlett and Font, others based on personal observation, but none of them containing anything new, until the account of Mr. A. F. Bandelier, published some ten years ago,5 is reached.

Mr. Bandelier described the large group, of which the Casa Grande forms a part, and gave its dimensions as 400 meters (1,300 feet) north and south by 200 meters (650 feet) east and west. He also described and gave measurements of the Casa Grande proper and discusses its place in the field of aboriginal architecture. In a later publication6 he discussed the ruin at somewhat greater length, and presented also a rough sketch plan of the group and ground plans of the Casa Grande and of the mound north of it. He gave a short history of the ruin and quite an extended account of the Pima traditions concerning it. He considered the Casa Grande a stronghold or fortress, a place of last resort, the counterpart, functionally, of the blockhouse of the early settlers of eastern United States.

In 1888 Mr. F. H. Cushing presented to the Congrès International des Américanistes7 some "Preliminary notes" on his work as director of the Hemenway southwestern archeological expedition. Mr. Cushing did not describe the Casa Grande, but merely alluded to it as a surviving example of the temple, or principal structure, which occurred in conjunction with nearly all the settlements studied. As Mr.