(M40) The conception of the corn-spirit as old and dead at harvest is very clearly embodied in a custom observed by the Arabs of Moab. When the harvesters have nearly finished their task and only a small corner of the field remains to be reaped, the owner takes a handful of wheat tied up in a sheaf. A hole is dug in the form of a grave, and two stones are set upright, one at the head and the other at the foot, just as in an ordinary burial. Then the sheaf of wheat is laid at the bottom of the grave, and the sheikh pronounces these words, “The old man is dead.” Earth is afterwards thrown in to cover the sheaf, with a prayer, “May Allah bring us back the wheat of the dead.”(96) CHAPTER IV. THE OFFICIAL FESTIVALS OF OSIRIS. § 1. The Festival at Sais. (M41) Such, then, were the principal events of the farmer’s calendar in ancient Egypt, and such the simple religious rites by which he celebrated them. But we have still to consider the Osirian festivals of the official calendar, so far as these are described by Greek writers or recorded on the monuments. In examining them it is necessary to bear in mind that on account of the movable year of the old Egyptian calendar the true or astronomical dates of the official festivals must have varied from year to year, at least until the adoption of the fixed Alexandrian year in 30 B.C. From that time onward, apparently, the dates of the festivals were determined by the new calendar, and so ceased to rotate throughout the length of the solar year. At all events Plutarch, writing about the end of the first century, implies that they were then fixed, not movable; for though he does not mention the Alexandrian calendar, he clearly dates the festivals by it.(97) Moreover, the long festal calendar of Esne, an important document of the Imperial age, is obviously based on the fixed Alexandrian year; for it assigns the mark for New Year’s Day to the day which corresponds to the twenty-ninth of August, which was the first day of the Alexandrian year, and its references to the rising of the Nile, the position of the sun, and the operations of agriculture are all in harmony with this supposition.(98) Thus we may take it as fairly certain that from 30 B.C. onwards the Egyptian festivals were stationary in the solar year.