20 BUREAU OF AMERICAN ETHNOLOGY [bull. 74 



Pit XV, at the southern end of Room XI, Avas justified owing to 

 the fact that the floor at this point Avas badly broken and had sunk. 

 This excavation is described in another place (p. 25). 



Pit XVI, at the southern side of Room IX and extending into 

 Room VII, was made through tlie floor broken on account of the 

 subsidence here. This also is described elsewhere (p. 25). 



Pit XVII was dug through the broken floor of the AVestern Ter- 

 race. Tunnel e Avith Floor P* runs into this excavation together with 

 the loAvest Tunnel y. 



Pit XVIII, also through the Western Terrace level, formed the 

 western end of Tunnel i. 



Pit XIX was made in Room III which showed no remains of a 

 floor. It was the eastern end of Tunnel d. 



Pit XX, in the eastern end of Room IV, connected with no tunnels 

 but was dug to note the possible presence of tlie ash stratum and the 

 formation below the excavated level of the Patio. This excavation 

 also shoAved that there were no floors under Room IV. 



Pit XXI was an important excavation in the center of the Patio 

 beloAv the edge of Floor P made in order to dig Tunnels y and z be- 

 low the series of floors under Rooms I and II. 



Pit XXII, made through the broken floor of Room I beloAv the 

 western edge of Floor A, forms a side entrance into Tunnel g. 



Pit XXIII begins at the level of Floor A, showing the various 

 strata forming the foundation for this floor, and connects with one 

 of the tunnels under Floor A, Tunnel } also enters this excavation 

 at the Avestern end. Floor P^ forms the Avestern side of the bottom 

 of this hole. 



Pit XXIV is an excavation under the eastern part of Pit XXIII. 

 It runs through a stratum of ashes (p. 25) and connects with Pit 

 XXV (pi. 2, sec. A'-?). BeloAv these tAvo last holes four Avells Avere 

 found (p. 24). LoAvest leA^el Tunnel * runs into Pit XXIV on the 

 western side. 



Pit XXV, made in the northeastern corner of the Patio, connects, 

 as has been noted, by Tunnel / with Pit XXIV. Directly at the 

 bottom of this excavation Well Z is located. Tunnel m runs into 

 Tunnel I near the corner of this excavation. 



Pit XXVI was made betAveen the southern edge of Floor B' and 

 the Northern Terrace. It is interesting as shoAving the construction 

 under B' and serA^ed as the entrance to Tunnel /«, the tunnel being 

 prolonged to the north of this excavation. 



Pit XXVII was excavated at the very northeastern corner of Room 

 VI AA'here the wall and floor had disappeared. It served as the north- 

 ern entrance to Tunnel m and the southern end of Tunnel p. 



