then he became first priest of this god, and continued to be so to the end of his life. The priests had to lead a holier and purer life than the laity. The ritual, the rules for purification and food, which the priests laid upon themselves, were stricter than those expected from the rest of the people. The priest must wash twice in each day and each night. Every third day he must shave his whole body, more especially his eyebrows and beard. He might only wear linen clothing (byssus), and shoes of papyrus. Any other clothing, and especially the hair and skins of beasts, defiled a priest; though on monuments the priests of Osiris wear leopard skins, especially at the ceremony of the burial. The flesh of sheep, swine, and most other animals was forbidden to the priests; they might never touch fish. Pulse they might not eat, and beans were not even to be looked at. They observed frequent fasts. From time to time they underwent certain mortifications, which in one instance continued for forty-two days, in order to destroy in themselves the forty-two deadly sins. Finally the priests could only marry one wife; while the laity were allowed to have other wives beside the first. The kings had more than one wife, and this was the rule among the wealthier class in Egypt.[270] We are not informed how sharply the different orders in Egypt were separated, or how far the different occupations were distinguished among the labouring or trading population in addition to the classes of priests and soldiers. We do not know, for instance, in what degree the tiller of the soil was distinguished from the artizan. We are only told that the people were divided into husbandmen, artizans, and shepherds, and the shepherds were regarded as the lowest class. But we learn that no one was allowed to follow any other occupation than that derived from his father.[271] The inscriptions tell us that the same office, as for instance that of architect, remained in the same family for twenty-three generations;[272] and in the seventh century B.C. a kind of caste grew up out of a number of Egyptian boys, whom Psammetichus handed over to his Ionian mercenaries. Hence we may conclude that the impulse to perpetuate types and lock up occupations in hereditary circles and fixed families was very strong, as was natural enough with the fixed and conservative character of the Egyptians. But however strong the impulse, however deeply rooted the custom for the son to follow the father's profession, there was in Egypt no caste in the strict sense of the term. Marriages between the orders were not forbidden, and it is exclusiveness in this point which completes the idea of caste. Moreover in Egypt there were adoptions and transitions from one order to another. The sepulchral pillars never lay any weight on birth in a certain order, but rather show that members of the same family had belonged to different orders--that a man could be at once a priest and a soldier, and Diodorus