The Tomb under the Ancient Empire. ^33 which we have already shown to have characterized the forms of the pyramids, their internal arrangements, and the materials of which they were composed. Thus some triangular prisms of granite have been found at the foot of the pyramid of Chephren, which seem to have formed part of its lower casing.^ Such a section seems, upon paper, the simplest that could be adopted for the filling in of the angle between two of the steps, but it is far inferior in solidity to the trapezoidal section. The prisms had no alliance one with another ; they had to depend for their security entirely upon their adherence to the faces of the graded core, so that they could easily be carried off, or become dislocated from natural causes. This system, unlike the first described, did not give a homogeneous envelope with a thickness of its own, and partly independent of the monument which it protected.^ i^sS^SCas^ iL^iliVWi. Fig. 155. — The casing of the pyramids ; drawn in perspective from the elevation of Perring. The casing of the Second Pyramid, moreover, does not seem to have been carried out on the same principle from top to bottom.
- B.^DEKER, Egypt, part i. p. 338 (ed. of 1S78). Herodotus (ii. 127) says that
the first course of the Great Pyramid was built of a parti-coloured Ethiopian stone ({iTroSet/Aa? tov ivpitiTov So/xor XlOov AWcottlkov ttolklXov). By Ethiopian stone we must understand, as several illustrations prove, the granite of Sytne. The Greek historian seems to have thought that the whole of the first course, throughout the thickness of the pyramid, was of this stone. His mistake was a natural one. In his time the pyramid was in a good state of preservation, and he never thought of asking whether or no the core was of the same material as the outer case. 2 On the other hand, tliese awkwardly shaped prisms offered less inducement to those who looked upon the pyramids as open quarries than the easily squared blocks of Cheops, while their position in the angles of the internal masonry enabled them to keep their places independently of the lower courses of the casing. — Ed. VOL. I. H H
