With the IVth Dynasty the connection of the royal house with the South seems to have finally ceased. The governmental centre of gravity was finally transferred to Memphis, and the kings were thenceforth for several centuries buried in the great pyramids which still stand in serried order along the western desert border of Egypt, from the Delta to the province of the Fayyum. With the latest discoveries in this Memphite pyramid-field we shall deal in the next chapter. The transference of the royal power to Memphis under the Hid Dynasty naturally led to a great increase of Egyptian activity in the Northern lands. We read in Manetho of a great Libyan war in the reign of Neche-rophes, and both Sa-nekht and Tjeser seem to have finally established Egyptian authority in the Sinaitic peninsula, where their rock-inscriptions have been found. In 1904 Prof. Petrie was despatched to Sinai by the Egypt Exploration Fund, in order finally to record the inscriptions of the early kings in the Wadi Maghara, which had been lately very much damaged by the operations of the turquoise-miners. It seems almost incredible that ignorance and vandalism should still be so rampant in the twentieth century that the most important historical monuments are not safe from desecration in order to obtain a few turquoises, but it is so. Prof. Petrie’s expedition did not start a day too soon, and at the suggestion of Sir William Garstin, the adviser to the Ministry of the Interior, the majority of the inscriptions have been removed to the Cairo Museum for safety and preservation. Among the new inscriptions discovered is one of Sa-nekht, which is now in the British Museum. Tjeser and Sa-nekht were not the first Egyptian kings to visit Sinai. Already, in the days of the 1st Dynasty, Semerkha had entered that land and inscribed his name upon the rocks. But the regular annexation, so to speak, of Sinai to Egypt took place under the Memphites of the Hid Dynasty.