122 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I47 



and on an associated floor at depth of 6 feet 2 inches we exposed 

 a fireplace, 15 by 17 inches and 7 inches deep, Hned with 7 slab 

 fragments on edge. 



From the apex of that solid triangle less than 3 feet of the former 

 second-type wall extended west at the time of our explorations and 

 this remnant had been incorporated in a third-type replacement the 

 base of which lay 3 feet 9 inches above the second-type floor and its 

 fireplace or 2^ feet below the Court surface. This third-type replace- 

 ment proved to be only one of several comparable efforts in this 

 particular area, some of which appeared independently while others 

 had utilized as foundations portions of second-type masonry previ- 

 ously erected and abandoned. Hence the near duplication to be 

 noted on our figures 4 and 5. 



One of these third-type constructions, a 2- foot- wide wall razed 

 at a height of 22 inches, emerges from under the north end of 

 Room 146 to abut and overlie the partly razed second-type pair de- 

 scribed above and continue west a little more than 12 feet until it 

 was itself razed to make way for still later construction. That 22- 

 inch-high wall remnant was built upon a 30-inch foundation rising 

 from the floor associated with the second-type pair at depth of 6 feet 

 and abutting them from either side. In that remnant, 37 inches from 

 the exterior of 146 is the east jamb of a former opening, 4 feet 9 

 inches wide and subsequently blocked, whose adobe sill rested di- 

 rectly upon the partially razed second-type pair 3^ feet below the court 

 surface (pi. 36, lower). 



At the south end of the West Court, as in the East Court, we 

 uncovered a succession of former occupation levels, sections of 

 foundations devoid of identifiable masonry, and Late Bonitian wall 

 fragments that seemed as much one type as another. Many of these, 

 but not all, have been represented on figure 5 because they were so 

 shallowly based they could not possibly be older than third-type. 

 So here, I again have substituted intuition for solid masonry as my 

 guide to the architecture of Pueblo Bonito. But depth, alone, is 

 sometimes a dependable yardstick. While walls of second-type 

 masonry are often based 6 feet below the surface those identifiable 

 as third-type rarely occur below 4 feet. 



Paired walls reminiscent of those we had encountered at the 

 south end of the East Court emerged from under the middle of Room 

 144- and continued west across the plaza to disappear under the north- 

 east corner of the Kiva 130 enclosure (fig. 5). Where they first ap- 

 peared the pair is positively of third-type composition and their ends 

 are closed as were those in the East Court, by an external block 



