6/104 This last, impregnated with salt and veined with crystalline gypsum, is a friable material, and unsuited for ornamentation. The bricks are of two kinds, both being merely sun-dried. The most ancient kind, which ceased to be used about the time of the Sixth Dynasty, is small (8.7 X 4.3 X 5.5 inches), yellowish, and made of nothing but sand, mixed with a little clay and grit. 113 .-- A Mastaba.] The later kind is of mud mixed with straw, black, compact, carefully moulded, and of a fair size (15.0 X 7.1 X 5.5 inches). The style of the internal construction differs according to the material employed by the architect. |