NO. I ARCHITECTURE OF PUEBLO BONITO JUDD 73 



Despite Late Bonitian alterations and repairs, both 315 and 316 

 possess architectural features that seem to identify them as orginally 

 Old Bonitian. In Room 315 a slab-lined fireplace occupies the 

 southeast quarter while on a floor 6 inches lower another fireplace, 

 masonry-lined and ash-filled, was half buried under the Late Boni- 

 tians' built-in northeast foundation. Cut into that same earlier floor 

 and continuing under the south corner of the room to an external 

 shaft is a masonry-lined ventilator duct. This latter, 26 inches wide 

 by 29 inches deep, was originally 7 feet long but had been reduced 

 to 22 inches when a masonry partition was introduced and the duct 

 floor beyond was raised 15 inches. 



At the northwest end of Room 315 an unplastered masonry par- 

 tition now 25 inches high and half as thick, screens an alcove with 

 floor 4 inches above that of the main room. Midway of that parti- 

 tion is a 15-inch opening, its sill at the alcove floor level and its south 

 jamb a 5-inch-diameter post that may have propped the southern- 

 most of the 2 main roofing beams. Three small poles against the 

 northwest wall and 4 feet 9 inches above the alcove floor had formed 

 a room-wide shelf 22 inches-deep — a fixture believed to be unusual 

 in an Old Bonitian room. One inch above the alcove floor and 40 

 inches from its west corner a 13-by-16-inch-high ventilator pierces 

 the southwest wall. 



In the south corner of the alcove, cut into a floor 10 inches lower 

 and connecting with an extramural shaft, is a masonry-lined venti- 

 lator duct measuring 19 inches NW-SE by 17 inches wide and 21 

 inches deep. It had been filled with ashy earth and floored over. On 

 that same lower floor but in the opposite corner a slab-lined fireplace 

 partially underlies a 6-foot section of first-type stonework that juts 

 forward 18 inches and is there abutted by the Late Bonitian construc- 

 tion that provides a northeast side for Old Bonitian Rooms 315 and 

 316. 



Room 316 likewise has at least one fixture usually associated with 

 esoteric practices, a subfloor ventilator duct. Such a duct, 15 inches 

 wide by 24 inches deep, underlies the south corner of the room and 

 connects with an outside air intake that rises 6 feet 2 inches and thus 

 equals the present height of the southwest wall. This latter is es- 

 pecially interesting since it consists of Old Bonitian stonework ve- 

 neered by second-type Late Bonitian masonry. The adjoining south- 

 east wall, indefinite as to type, is later and had replaced the convex 

 curve of Kivft. L. In the northwest corner a slab-lined fireplace 25 

 inches in diam^t*i;4l|,^||^B|||p&fidoned, floored over, and replaced by 



