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,
Industry in ancient Tamil country Industry in ancient Tamil country During the Sangam age, industrial activity was considered ancillary to agriculture and was mostly domestic, not factory-based. Simple workshops where the blacksmith made the wheel or the carpenter his wooden wares could be called factories of a sort. Weaving, pearl fishing, smithy and ship building were some of the prominent industries of the ancient Tamil country. Cotton and silk fabrics from Madurai and Urayur were in great demand; the textiles from these regions were well known for their high quality. Korkai was the center of pearl trade and produced pearls that were sought after not