Fig. 9. Mashongnavi and Shupaulovi from Shumopavi.

The general view of Mashongnavi given in [Pl. XXVII] shows that the site of this pueblo, as well as that of its neighbor, Shupaulovi, was not particularly defensible, and that this fact would have weight in securing adherence in the first portion of the pueblo built to the defensive inclosed court containing the ceremonial chamber. The plan strongly indicates that the other courts of the pueblo were added as the village grew, each added row facing toward the back of an older row, producing a series of courts, which, to the present time, show more terracing on their western sides. The eastern side of each court is formed, apparently, by a few additions of low rooms to what was originally an unbroken exterior wall, and which is still clearly traceable through these added rooms. Such an exterior wall is illustrated in [Pl. XVIII]. This process continued until the last cluster nearly filled the available site and a wing was thrown out corresponding to a tongue or spur of the knoll upon which it was built. Naturally the westernmost or newer portions show more clearly the evidence of additions and changes, but such evidence is not wholly wanting in the older portions. The large row that bounds the original eastern court on the west side may be seen on the plan to be of unusual width, having the largest number of rooms that form a terrace with western aspect; yet the nearly straight line once defining the original back wall of the court inclosing cluster on this side has not been obscured to any great extent by the later additions (Pl. XXVIII). This village furnishes the most striking example in the whole group of the manner in which a pueblo was gradually enlarged as increasing population demanded more space. Such additions were often carried out on a definite plan, although the results in Tusayan fall far short of the symmetry that characterizes many ruined pueblos in New Mexico and Arizona.

Plate XXVIII. Back wall of a Mashongnavi house-row.

A few of these ancient examples, especially some of the smaller ruins of the Chaco group, are so symmetrical in their arrangement that they seem to be the result of a single effort to carry out a clearly fixed plan. By far the largest number of pueblos, however, built among the southwest tablelands, if occupied for any length of time, must have been subject to irregular enlargement. In some ancient examples, such additions to the first plan undoubtedly took place without marring the general symmetry. This was the case at Pueblo Bonito, on the Chaco, where the symmetrical and even curve of the exterior defensive wall, which was at least four stories high, remained unbroken, while the large inclosed court was encroached upon by wings added to the inner terraces. These additions comfortably provided for a very large increase of population after the first building of the pueblo, without changing its exterior appearance.

In order to make clearer this order of growth in Mashongnavi, a series of skeleton diagrams is added in Figs. 10, 11, and 12, giving the outlines of the pueblo at various supposed periods in the course of its enlargement. The larger plan of the village ([Pl. XXVI]) serves as a key to these terrace outlines.

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Figs. 10,11, 12.Diagrams showing growth of Mashongnavi.

The first diagram illustrates the supposed original cluster of the east court (Fig. 10), the lines of which can be traced on the larger plan, and it includes the long, nearly straight line that marks the western edge of the third story. This diagram shows also, in dotted lines, the general plan that may have guided the first additions to the west. The second diagram (Fig. 11) renders all the above material in full tint, again indicating further additions by dotted lines, and so on. (Fig. 12.) The portions of a terrace, which face westward in the newer courts of the pueblo, illustrated in Pl. XXIX, were probably built after the western row, completing the inclosure, and were far enough advanced to indicate definitely an inclosed court, upon which the dwelling rooms faced.