clay walling
A primitive method of wall construction in regions abounding in clay, as in Mesopotamia, in some parts of Great Britain, and of Southwestern states of the U.S. The wall is sometimes formed of compacted or stamped clay in the mass (pise), sometimes and more often of unburned bricks dried in the sun, called in the United States and Spanish America adobe. In some cases the clay wall is baked at least in part by fires of fagots built against it. (Sturgis, 1900)