Heliopolis (ancient Egypt) from him the true length of the year and month, upon which he formed his octaeterid, or period of 8 years or 99 months. Ptolemy II had Manetho, the chief priest of Heliopolis, collect his history of the ancient kings of Egypt from its archives. The later Ptolemies probably took little interest in their "father" Ra, and Alexandria had eclipsed the learning of Heliopolis; thus with the withdrawal of royal favour Heliopolis quickly dwindled, and the students of native lore deserted it for other temples supported by a wealthy population of pious citizens. By the 1st century BC, in fact,
Early Kassite rulers Early Kassite rulers The early Kassite rulers are the sequence of eight, or possibly nine, names which appear on the Babylonian and Assyrian King Lists purporting to represent the first or ancestral monarchs of the dynasty that was to become the Kassite or 3rd Dynasty of Babylon which governed for 576 years, 9 months, 36 kings, according to the "King List A". In all probability the dynasty ruled Babylon for around 350 years. The era of the early Kassite rulers is characterized by a dearth of surviving historical records. The principal sources of evidence for the existence of these monarchs