plaza extends north and south 420 feet and east and west 260 feet.

[Footnote 1: A number of copies of Font's Journal are known.
Bancroft gives a partial translation in op. cit., p. 623, note, as
does also Bartlett (op. cit., pp. 278-280); and a French translation
is given by Ternaux Compans, ix, Voyages de Cibola, appendix.]

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