354 JANOS TO CORRELITOS, 
corridors, the entire edifice must have extended from 
north to south at least 800 feet, and from east to west 
about 250. On the south side a regular and continuous 
wall can be traced, while the eastern and western fronts 
are extremely irregular, with projecting walls. There 
appears to have been several courts within the inclo- 
sure, of greater or less dimensions. 
The general character of this extensive range of 
buildings is the same as that of the Casas Grandes, near 
the Pimo villages, on the Gila, and they are unquestion- 
ably the work of the same people. The material, too, 
is the same as that of the ruins on the Salinas. Like 
the edifice on the Gila, it is built with huge blocks of 
mud,, laid up in the same manner, though, from some 
cause, probably the lesser tenacity of the adobe, the 
walls are in a greater state of decay. In no other way 
- can this decay be accounted for, unless a greater an- 
tiquity is allowed for these than for the Gila edifice, 
which would be contrary to all preconceived opinions 
of them. Theruinous state of these buildings may also 
be attributed to the more frequent rains to which they 
are exposed than those on the Gila. 
- The walls of the present building are much decay- 
ed; in fact one half of their thickness is washed away; 
and it is only by digging below the surface that their 
original thickness can be seen. In the Gila edifice, the 
inner surface of the walls is as perfect as though the 
mason had but yesterday passed his trowel over them, 
and the exterior ones are but little injured. In these 
ruins, on the contrary, no portion of the surface 1S 
visible. I sought for this, in order to ascertain if they 
had been plastered inside or out; but it could only be 
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