30 BUREAU OF AMERICAN ETHNOLOGY [bull. 74 



part of Koom II were filled in solid with adobes up to the level 

 of Floor A lends stren^jth to this supposition. Both Floor A and 

 Floor A' were only slifjhtly below the former level of the hill. 

 Plowing might easily explain the destruction of the greater part 

 of this portion between. If this idea is accepted, the question diffi- 

 cult to answer is, Why were the stone walls with the buttresses built 

 to sustain Floor A if this floor extended to the west over Eooms I 

 and II? 



Continuation of terraces. — Following a description of the Main 

 Structure, some mention should be made of additions to the Terrace 

 on the southwestern and northwestern corners. These were prob- 

 ably built subsequent to the erection of the Northern and Southern 

 Extensions, showing, in all probability, that the INIain Structure and 

 the Extensions were occupied at the same time. 



Room X. — This is on the south and is an addition to the Terrace 

 floor in the southwestern corner. The plaster of the floor covers 

 the top of the stone facing of the Terrace and the floor was clearly 

 built over the depressed Floor H (pi. 6, a) . In the center of Eoom X 

 a large stone (17) was found resting on the floor. It w^as worn 

 smooth on the top. It may at one time have formed the base of a 

 timber support. A wall has been indicated along the southern 

 and western sides of this room. That on the west is made evident 

 by three worked stones (16) forming the outside facing of the wall. 

 On the southern and eastern sides the floor runs to the edge with 

 no trace of a wall. On the south a wall of earth was left in place 

 (pi. 7, ff), as 0.25 m. above the floor three small pieces of a higher 

 floor (J) were found. These are similar in height to a piece of floor 

 (J') found to the west of the Western Terrace. This floor is diffi- 

 cult to explain. The only suggestion that can be offered is that 

 J and J' are the remains of a former floor on the south and west 

 corresponding in height to Floor M on the north. It seems probable 

 that in addition to the continuation of the Southern Terrace floor now 

 seen in Room X the entire floor of the Southern Terrace was ex- 

 tended under Floor B well up to the northern wall of Room XL 

 Proof of this is given in the remains of plaster from a broken floor 

 found under the higher level Floor B and at the same height as the 

 floor of the Terrace (pi. 2, sec. ^-j) . 



Floor G. — This is another addition to the Terrace at the south- 

 western corner. Here, as in the previous case, the floor is flush with 

 the top of the stones facing the Terrace. This floor extended under 

 the road. 



Room XII (pi. 6, h). — An addition to the Terrace on the north- 

 western corner, corresponding to Room X on the southwest, should 

 be noted. The plaster just covers the top of the facing stones. The 

 northern end of this room is not known, as it is covered by Floors M 



