The Egyptians of the Theban period were compelled to form their opinions of the Pharaohs of the Memphite dynasties in the same way as we do, less by the positive evidence of their acts than by the size and number of their monuments: they measured the magnificence of Cheops [Khufu] by the dimensions of his pyramid, and all nations having followed this example, Cheops has continued to be one of the three or four names of former times which sound familiar to our ears. The hills of Gizeh in his time terminated in a bare, wind-swept tableland. A few solitary mastabas were scattered here and there on its surface, similar to those whose ruins still crown the hill of Dahshur. The Sphinx, buried even in ancient times to its shoulders, raised its head halfway down the eastern slope, at its southern angle; beside him the temple of Osiris, lord of the Necropolis, was fast disappearing under the sand; and still farther back, old abandoned tombs honeycombed the rock. [Sidenote: [_ca._ 3733 B.C.]] Cheops [Khufu] chose a site for his pyramid on the northern edge of the plateau, whence a view of the city of the White Wall, at the same time of the holy city of Heliopolis, could be obtained. A small mound which commanded this prospect was roughly squared, and incorporated into the masonry; the rest of the site was levelled to receive the first course of stones. The pyramid when completed had a height of 476 feet on a base 764 feet square; but the decaying influence of time has reduced these dimensions to 450 and 730 feet respectively. It possessed, up to the Arab conquest, its polished facing, coloured by age, and so subtly jointed that one would have said that it was a single slab from top to bottom. The work of facing the pyramid began at the top; that of the point was first placed in position, then the courses were successively covered until the bottom was reached. In the interior every device had been employed to conceal the exact position of the sarcophagus, and to discourage the excavators whom chance or persistent search might have put upon the right track. Their first difficulty would be to discover the entrance under the limestone casing. It lay hidden almost in the middle of the northern face, on the level of the eighteenth course, at about forty-five feet above the ground. A movable flagstone, working on a stone pivot, disguised it so effectively that no one except the priests and custodians could have distinguished this stone from its neighbours. When it was tilted up, a yawning passage was revealed, three and a half feet in height, with a breadth of four feet. The passage is an inclined plane, extending partly through the masonry and partly through the solid rock for a distance of 318 feet; it passes through an unfinished chamber and ends in cul-de-sac 59 feet farther on.