NO. I ARCHITECTURE OF PUEBLO BONITO JUDD I49 



The main east-west foundations may have been constructed first 

 for they are generally wider and higher than other units and they 

 often stand directly upon the ever-present underlying silt layer. In 

 contrast, the abutting lesser units rest upon 20-24 inches of sand over- 

 lying the silt strata. In 1923 when we first came upon these buried 

 surfaces I invariably described them as "pavements" because they 

 seemed too smooth to be of natural origin but later, after Bryan's 

 1924 and 1925 geological observations and my own independent find- 

 ings, it became obvious each exposure was no more than a record of 

 silt transported and deposited by sluggish floodwaters. The over- 

 burden might differ in depth and composition but the underlying layer 

 remained the same, floodwater silt. 



Jackson (1878, p. 442) notes an east-side wall extending south 

 300 feet from Hillside Ruin to meet at right angles another wall 180 

 feet east of Pueblo Bonito. Although this meeting is clearly indicated 

 on his restoration of Pueblo Bonito (pi. 49, upper), I suspect an error 

 on the part of the lithographer. Jackson was not given to erroneous 

 observations. Three hundred feet from Hillside Ruin, or even from 

 the cliff behind, would put the intersection well south of the lone wall 

 foundation we traced 509 feet east (£23" N) from Room 176. 



McNitt (1957, p. 175) quotes his informant to the effect that 

 building stone for the Wetherill residence and store "was brought 

 from a tumbled prehistoric wall just east of Bonito," a recollection 

 that may account for the irregular top of the lone foundation. We 

 did not explore the considerable area between this bordering founda- 

 tion and the series fronting Hillside Ruin, but we ran several trenches 

 at the east end and, for ready reference, assigned identifying num- 

 bers here and there (fig. 11). 



From Station 2, where it ends with a height of 14 inches and a 

 width of 24, our lone bordering foundation extends arrow-straight 

 toward the southeast corner of Pueblo Bonito. Its broken east end, 

 10 inches under the surface, is surrounded by blown sand; no con- 

 structional debris is apparent. Built of roughly fractured friable 

 sandstone, this long wall-like foundation overlies every other on its 

 path, including 22 inches of excellent fourth-type masonry at Station 

 3, and therefore is later than they. It measures 24 inches wide by 

 14 inches high at Station 2 and the same at Station 5 but a few feet 

 further west the foundation stands 26 inches high and comes to the 

 present surface (pi. 48, left). It is not improbable that this section, 

 at least, appeared as a free wall in Jackson's time. 



At Station 4, at the lower end of a long narrow room that extends 



