The origin of Egyptian architecture, like that of Egyptian history, is lost in the mists of antiquity. The remains of all, or almost all, other styles of architecture enable us to trace their rude beginnings, their development, their gradual progress up to a culminating point, and thence their slow but certain decline; but the earliest remains of the constructions of the Egyptians show their skill as builders at the height of its perfection, their architecture highly developed, and their sculpture at its very best, if not indeed at the commencement of its decadence; for some of the statuary of the age of the Pyramids was never surpassed in artistic effect by the work of a later era. It is impossible for us to conceive of such scientific skill as is evidenced in the construction of the great pyramids, or such artistic power as is displayed on the walls of tombs of the same date, or in the statues found in them, as other than the outcome of a vast accumulation of experience, the attainment of which must imply the lapse of very long periods of time since the nation which produced such works emerged from barbarism. It is natural, where so remote an antiquity is in question, that we should feel a great difficulty, if not an impossibility, in fixing exact dates, but the whole tendency of modern exploration and research is rather to push back than to advance the dates of Egyptian chronology, and it is by no means impossible that the dynasties of Manetho, after being derided as apocryphal for centuries, may in the end be accepted as substantially correct. Manetho was an Egyptian priest living in the third century B.C., who wrote a history of his country, which he compiled from the archives of the temples. His work itself is lost, but Josephus quotes extracts from it, and Eusebius and Julius Africanus reproduced his lists, in which the monarchs of Egypt are grouped into thirty-four dynasties. These, however, do not agree with one another, and in many cases it is difficult to reconcile them with the records displayed in the monuments themselves.