26 



INDIANS OF THE SOUTHWEST. 



between the larger undressed stones were filled with 

 small fragments. Some of the walls show regular 

 courses of large stones alternating with courses of 

 smaller ones producing a banded effect evidently 

 sought for as a decoration. 



Diagram of Typical Small Ruin. 

 (Courtesy of Dr. Prudden.) 



Along the lower Gila and Salt Rivers bed-rock as a 

 source of building material was not available and 

 round river boulders were used, the greater part of the 



