The study of the calendar of Egypt, no less than the use of writing upon the great monuments, carries us back to an early date for the beginning of Egyptian civilization. We saw that the priests, by adding five days to the old year of 360 days, had come tolerably near to the natural year, and had fixed the beginning of their year by the rising of Sirius. Monuments of the age of the Amenemha and Sesurtesen show that even then the rising of Sirius had been observed and noted. Nevertheless, the beginning of their short civic year tended to anticipate the natural year; and thus the Egyptian year was always in advance of the solar. But if it was observed and noted down by the Egyptians, that in the year of their reckoning, corresponding to the Julian year 1322 B.C., the beginning of the year had again fallen on the right day, that is, on the rising of Sirius, so that the first day of Thoth in the movable year coincided with the first day of Thoth in the solar year, which was the 20th of July, it follows that the fixing of the beginning of the year on July 20, and of the length of the year at 365 days, had taken place 1,460 years (p. 30) before the date 1322 B.C., _i.e._ in the year 2782 B.C. This conclusion is supported by another consideration. Our astronomers have calculated that it was only in the two or three centuries preceding and following the year 3285 B.C. that the rising of Sirius so exactly coincided with the summer solstice and the rise of the Nile; and therefore in this epoch only could the observation have been made that Sirius brought the inundation. Hence in this period only could the beginning of the year have been fixed at the rising of Sirius. But if the Egyptians could set aside an old calendar and introduce a new arrangement requiring attention and long-continued observations, somewhere about the year 2800 B.C., it is clear that the beginnings of higher culture in Egypt cannot be later than 3000 B.C.[33] Valuable as this result is, we are nevertheless carried back to hypotheses and combinations in order to fix the various epochs, and more especially before the reign of the Hyksos. And as an arrangement of history is impossible without chronology, divisions must be assumed here and there where it is impossible to establish them satisfactorily. The arrangement of Egyptian chronology proposed by Lepsius has for the first time introduced a well-considered system into the whole. Hence, in spite of the objections already brought forward against the basis of this arrangement, and the proved uncertainties and contradictions of tradition and the monuments, which the progress of inquiry into the older periods may indeed lessen but cannot remove, I follow the data given by Lepsius for the epochs of Egyptian history, and the duration of the reigns which come under our notice. FOOTNOTES: [3] "Il." 9, 381; "Od." 4, 230 ff. 477, 581. 14, 257, 264 ff. 17, 426. [4] Herod. 2, 2; Diod. 1, 10, 50; Plat. Tim. p. 23.