[62] This statement is made with reservation, as the true architectural form of the Casas Grandes of Chihuahua is not yet known. The published plans show no encircling wall like that of Casa Grande on the Gila; probably the Casas Grandes of Chihuahua belong to a highly specialized type different from others. [63] While neither the terraced nor the “compound” type of architecture has been seen in the Mimbres for the reason that both were specialized in their distinct geographical areas, the fragile-walled, jacal type of habitation is identical in form, though not in time, in all three localities. Transcriber’s Notes: - Text enclosed by underscores is in italics (_italics_). - Blank pages have been removed. - Obvious typographical errors have been silently corrected.