THE ANCIENT PEOPLES. 
27 
walls being composed of adobe, the peculiar clay so 
abundant in the Southwest. The walls of Casa Grande 
seem to have been made by pouring moist clay and 
gravel into forms as concrete walls are now made. 
When a section of the wall had hardened, the forms 
CS RAYA 
bh 5 
i \ 
HOD : 
= ere 5 
s = 
v2 & 4 
am: A 
TST TY AS KE) 
y! Tod e e~ 
v4 ey 1 wet 
a = oe B 
ag ar M4 - 
r t é 
H EEE EAT hh 
a! 3a 
E 1 
‘s KI 
>, Samer 
Dai OF ix Wan 
Burial Mound 
Diagram of Typical Small Ruin. 
(Courtesy of Dr. Prudden.) 
were raised and another section made. 
Walls of pre- 
historic pueblos of the Galisteo Basin have been found 
built of cubical blocks of adobe laid up without mortar. 
