FEWKES] CASA GRANDE MOUNDS 107 
broken sections, these walls were supported in part by upright logs 
(pls. 44, 45), but were constructed of huge cubes of rammed natural 
cement. in the same way as the walls of Casa Grande. The arrange- 
ment of the 11 rooms composing Clan-house 1 is as follows: On both 
the north and south sides there is a row of rooms the breadth of which 
is about uniform, while the length varies; the room at the east end of 
each series is the largest. There are five rooms (F—J) in the series on 
the north and four (A-D) in the series on the south. To the west of 
the plaza, between these rooms and connecting them on this end, are 
two rooms (H, M), which have the highest walls and were apparently 
the most important rooms in Clan-house 1. These rooms occupy 
19.6" 
+9" 
U6" 
Fic. 17. Ground plan of Clan-house 1. 
about half of the space between the north and south series of rooms, 
the remaining area consisting of a plaza, or open space, having an 
entrance from the room on the west side. The several rooms in the 
series on the north side (F—J) do not communicate, nor have they 
external passageways except in two instances (G, J); also, room D 
in the southwest corner communicates with a large room (M) at the 
west end of the plaza. In the middle of the centrally placed (M) of 
the 11 rooms above mentioned was found a seat (figs. 19, 20) facing 
the south, made of a great block of natural cement. 
It is suggested that Clan-house 1 was a structure similar to Casa 
Grande proper and pertained to the worship of the six primary 
