I have been fully convinced ever since my first restoration (in 1834) of the three Egyptian Empires, the middle one of which embraces the time of the Hyksos, that the 12th Dynasty of Manetho was the last complete one of the Old Empire, and that the throne of the Memphitic Pharaohs, according to the connection which that restoration enabled me to establish between Manetho and Eratosthenes, passed with the 4th King of the 13th Dynasty over to the Shepherd-Kings.