[62] Æschylus, Pers. 14-124, 722-737. Heeren (in his learned work on the commerce of the ancient world, Über den Verkehr der alten Welt, part 1, sect. 1, pp. 162, 558, 3d edition) thinks that Herodotus had seen the actual muster-roll, made by Persian authority, of the army at Doriskus. I cannot think this at all probable: it is much more reasonable to believe that all his information was derived from Greeks who had accompanied the expedition. He must have seen and conversed with many such. The Persian royal scribes, or secretaries, accompanied the king, and took note of any particular fact or person who might happen to strike his attention (Herodot. vii, 100; viii, 90), or to exhibit remarkable courage. They seem to have been specially attached to the person of the king as ministers to his curiosity and amusement, rather than keepers of authentic and continuous records. Heeren is disposed to accept the numerical totals, given by Herodotus as to the army of Xerxes, much too easily, in my judgment: nor is he correct in supposing that the contingents of the Persian army marched with their wives and families (pp. 557-559). After the numeration had taken place, Xerxes passed in his chariot by each of the several contingents, observed their equipment, and put questions to which the royal scribes noted down the answers: he then embarked on board a Sidonian trireme, which had been already fitted up with a gilt tent, and sailed along the prows of his immense fleet, moored in line about four hundred feet from the shore, and every vessel completely manned for action. Such a spectacle was well calculated to rouse emotions of arrogant confidence, and it was in this spirit that he sent forthwith for Demaratus, the exiled king of Sparta, who was among his auxiliaries,—to ask whether resistance on the part of the Greeks to such a force was even conceivable. The conversation between them, dramatically given by Herodotus, is one of the most impressive manifestations of sentiment in the Greek language.[63] Demaratus assures him that the Spartans most certainly, and the Dorians of Peloponnesus probably, will resist him to the death, be the difference of numbers what it may. Xerxes receives the statement with derision, but exhibits no feeling of displeasure: an honorable contrast to the treatment of Charidemus a century and a half afterwards, by the last monarch of Persia.[64]