Alexandreia or Dicæarchia, by watching the arrival and departure of the merchant vessels, and observing how much heavier or lighter their cargoes are when they depart or when they return.
In addition to the wealth derived from merchandise landed at the harbours on each side, on the sea and on the lake, its fine air is worthy of remark: this results from the city being on two sides surrounded by water, and from the favourable effects of the rise of the Nile. For other cities, situated near lakes, have, during the heats of summer, a heavy and suffocating atmosphere, and lakes at their margins become swampy by the evaporation occasioned by the sun’s heat. When a large quantity of moisture is exhaled from swamps, a noxious vapour rises, and is the cause of pestilential disorders. But at Alexandreia, at the beginning of summer, the Nile, being full, fills the lake also, and leaves no marshy matter which is likely to occasion malignant exhalations. At the same period, the Etesian winds blow from the north, over a large expanse of sea, and the Alexandrines in consequence pass their summer very pleasantly.
“one after the other springs.”[807]
All the buildings are connected with one another and with the harbour, and those also which are beyond it.
The Museum is a part of the palaces. It has a public walk and a place furnished with seats, and a large hall, in which the men of learning, who belong to the Museum, take their common meal. This community possesses also property in common; and a priest, formerly appointed by the kings, but at present by Cæsar, presides over the Museum.
A part belonging to the palaces consists of that called Sema, an enclosure, which contained the tombs of the kings and that of Alexander (the Great). For Ptolemy the son of Lagus took away the body of Alexander from Perdiccas, as he was conveying it down from Babylon; for Perdiccas had turned out of his road towards Egypt, incited by ambition and a desire of making himself master of the country. When Ptolemy had attacked [and made him prisoner], he intended to [spare his life and] confine him in a desert island, but he met with a miserable end at the hand of his own soldiers, who rushed upon and despatched him by transfixing him with the long Macedonian spears. The kings who were with him, Aridæus, and the children of Alexander, and Roxana his wife, departed to Macedonia. Ptolemy carried away the body [CAS. 794] of Alexander, and deposited it at Alexandreia in the place where it now lies; not indeed in the same coffin, for the present one is of hyalus (alabaster?) whereas Ptolemy had deposited it in one of gold: it was plundered by Ptolemy surnamed Cocce’s son and Pareisactus, who came from Syria and was quickly deposed, so that his plunder was of no service to him.