NO. I ARCHITECTURE OF PUEBLO BONITO — JUDD 2I9 



meet a temporary need (fig. 7, above Sta. 158). Village debris ex- 

 tended both north and south, some of it continuing northward under 

 Room 136 as though dumped there intentionally to provide space for 

 additional rooms. This thought may seem fantastic, but, vi^hether 

 intentional or otherwise, it is a fact that additional space was 

 provided. 



At 45 feet from Room 136 our trench crossed the north side 

 of the West Mound enclosure. This clearly was an attempt to con- 

 fine the accumulating village waste, and a tardy attempt at that. The 

 lateness of the effort may be judged from the fact that 8 feet or 

 more of such debris had collected here before the Late Bonitians 

 began the barrier. They began it with their well-known second- 

 type masonry but later, when the need for more height arose, 

 third-type stonework was employed. The base of this replacement 

 lies 2 or 3 feet above floor level of Room 136 and about 4 feet above 

 the present plain in mid-valley which, as noted elsewhere, lies from 

 2 to 5 feet above that in existence when Pueblo Bonito was inhabited. 



Between Stations 95 and 115 is a purposeful dump of construc- 

 tional debris that has been eroded, both north and south, by water 

 action. Across the top of this pile is a puzzling silt surface for which 

 I have no convincing explanation unless it be that chunks of adobe 

 mortar among the discards had been rained on and trampled and then 

 left bare for a considerable period. Other such surfaces exposed by 

 our trenching operations were, in general, far less extensive. 



Two masonry walls at Stations 35 and 50, the latter the earlier 

 of the two, clearly were erected to confine channeled flood waters 

 (fig. 7). Layered sand, clay, and gravel on the north side of each 

 barrier establish the recurrent presence of running water. To the 

 right of Station O, strata of laminated and clay-streaked sand 

 slope down and toward the south, there to be lost among the uncon- 

 formities of Bryan's buried arroyo. Farther to the right, between 

 — 25 and —45, miscellaneous potsherds were recovered at depths of 

 9 to 10 feet in the refill of that ancient arroyo. Beyond the end 

 of our drawing and a short distance to the east more sherds, includ- 

 ing Late Bonitian types, were recovered in Test Pit No. 3, 18 feet 3 

 inches deep, as described by Bryan (1954, p. 58). 



To repeat, I made an unsuccessful stratigraphic test in 1922 at 

 the upcanyon end of the East Refuse Mound. Later a second test 

 was attempted at the crest of the mound and about 75 feet west of 

 the first but it, too, proved a failure. However, this second effort 

 brought to light an entirely unsuspected midmound feature, a par- 



