The first mistake consisted in building long vessels [of war] at a time when there was no war, nor any likely to occur by sea. For the Arabians, being mostly engaged in traffic and commerce, are not a very warlike people even on land, much less so at sea. Gallus, notwithstanding, built not less than eighty biremes and triremes and galleys (phaseli) at Cleopatris,[783] near the old canal which leads from the Nile. When he discovered his mistake, he constructed a hundred and thirty vessels of burden, in which he embarked with about ten thousand infantry, collected from Egypt, consisting of Romans and allies, among whom were five hundred Jews and a thousand Nabatæans, under the command of Syllæus. After enduring great hardships and distress, he arrived on the fifteenth day at Leuce-Come, a large mart in the territory of the Nabatæans, with the loss of many of his vessels, some with all their crews, in consequence of the difficulty of the navigation, but by no opposition from an enemy. These misfortunes were occasioned by the perfidy of Syllæus, who insisted that there was no road for an army by land to Leuce-Come, to which and from which place the camel-traders travel with ease and in safety from Petra, and back to Petra, with so large a body of men and camels as to differ in no respect from an army. 24. Another cause of the failure of the expedition was the fact of king Obodas not paying much attention to public affairs, and especially to those relative to war (as is the custom with all Arabian kings), but placed everything in the power of Syllæus the minister. His whole conduct in command of the army was perfidious, and his object was, as I suppose, to examine as a spy the state of the country, and to destroy, in concert with the Romans, certain cities and tribes: and when the Romans should be consumed by famine, fatigue, and disease, and by all the evils which he had treacherously contrived, to declare himself master of the whole country. Gallus however arrived at Leuce-Come, with the army labouring under stomacacce and scelotyrbe, diseases of the country, the former affecting the mouth, the other the legs, with a kind of paralysis, caused by the water and the plants [which the soldiers had used in their food]. He was therefore compelled to pass the summer and the winter there, for the recovery of the sick.