It was in this reign that the historian Diodorus Siculus travelled in Egypt, and wrote his account of the manners and religion of the people. What he tells us of the early Egyptian history is of little value when compared with the history by Manetho, who was a native of the country and could read the hieroglyphic records, or even with that by Herodotus; but nevertheless he deserves great praise, and our warmest thanks, for being nearly the first Greek writer when Egyptian learning could no longer be thought valuable; when the religion, though looked down upon, might at any rate be studied with ease--for being nearly the first writer who thought the manners of this ancient people, after they had almost passed off the page of history, worth the notice of a philosopher. Diodorus never quotes Manetho, but follows Herodotus in making one great hero for the chief actions of antiquity, whom he calls Sesoosis or Sesonchosis. To him he assigns every great work of which the author was unknown, the canals in the Delta, the statue of Amenhothes III., the obelisks of Ramses II., the distant navigation under Necho, the mounds and trenches dug against Assyrian and Persian invasion, and even the great ship of Ptolemy Philopator; and not knowing that Southern Arabia and even Ethiopia had by the Alexandrians been sometimes called India, he says that this hero conquered even India beyond the Ganges. On the other hand, the fabulous conquest of the great serpent, the enemy of the human race, which we see sculptured on the sarcophagus of Oimenepthah, he describes as an historic fact of the reign of Ptolemy Philadelphus. He tells us how this huge beast, forty-five feet long, was beaten down by troops of archers, slingers, and cavalry, and brought alive in a net to Alexandria, where Eve's old enemy was shown in a cage for the amusement of the curious citizens.