Sir G. Col. H. Sir G. Col. H. Wilkinson. Vyse. Wilkinson. Vyse. Cheops 756′ 764′ 480′ 9″ 480′ 9″ Chephren 707′ 9″ 453′ 454′ 3″ Mycerinus 364′ 6″ 208′ All of these are oriented and the entrances are all on the North sides. This is a rule applicable to all the pyramids except that of Sakkarah, which is placed without reference to the points of the compass and was probably erected at a much later date. The first or Great Pyramid contains one subterranean chamber, reached by a passage some three hundred feet long, and two other apartments above the level of the ground, the one above the other, called the King’s and Queen’s sepulchres. The entrance to the connecting corridors is placed 45 feet above the ground and 23 feet away from the true centre in order to deceive explorers. The Queen’s Chamber is about 18 feet square by 20 feet in height, and is placed directly under the apex of the pyramid. It is 67 feet above the ground, and 71 feet below the King’s Chamber. The passage leading to the latter is 28 feet high, formed by corbelled walls. This chamber is roofed by a flat ceiling and measures 34 feet in length by 17 in breadth, and is 19 feet high. The walls and ceiling are built of finely polished granite, and the apartment contains a sarcophagus of the same material. The weight of the superincumbent masonry is relieved by five other compartments placed over the chamber, four of which are covered by flat slabs, and the fifth by inclined stones resting against each other. It was in this highest compartment that some hieroglyphics scrawled in red ochre on the walls were discovered, by means of which the name Shoofoo became known. Herodotus says that one hundred thousand men were employed during twenty years in building the Great Pyramid, after they had devoted ten years, previous to its erection, to the construction of a causeway to the Nile, over which the stone was carried, which had been brought down the river from the Arabian hills. Diodorus asserts that the number of workmen employed was upward of three hundred and sixty thousand. The second pyramid contains two chambers, the most important of which is on the ground level, partly sunk in the rock. Its dimensions are 46 feet long by 16 in width, and 22 feet high. Within it a granite sarcophagus was found, containing the bones of an ox. This discovery gave rise to much speculation, as to whether the pyramids were not originally intended for the sepulchres of the animal deities worshipped by the Egyptians, the bull Apis in particular. The third pyramid was covered by a casing of polished red granite, formed of blocks with bevelled edges. There are several chambers inside, one of which contained a mummy and case, now transferred to the British Museum.