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 306 order, engaged the Palmyrenians in a laborious pursuit, harassed them by a desultory combat, and at length discomfited this impenetrable but unwieldy body of cavalry. The light infantry, in the meantime, when they had exhausted their quivers, remaining without protection against a closer onset, exposed their naked sides to the swords of the legions. Aurelian had chosen these veteran troops, who were usually stationed on the Upper Danube, and whose valour had been severely tried in the Alemannic war. After the defeat of Emesa, Zenobia found it impossible to collect a third army. As far as the frontier of Egypt, the nations subject to her empire had joined the standard of the conqueror, who detached Probus, the bravest of his generals, to possess himself of the Egyptian provinces. Palmyra was the last resource of the widow of Odenathus. She retired within the walls of her capital, made every preparation for a vigorous resistance, and declared, with the intrepidity of a heroine, that the last moment of her reign and of her life should be the same.

Amid the barren deserts of Arabia, a few cultivated spots rise like islands out of the sandy ocean. Even the name of Tadmor, or Palmyra, by its signification in the Syriac as well as in the Latin language, denoted the multitude of palm trees which afforded shade and verdure to that temperate region. The air was pure, and the soil, watered by some invaluable springs, was capable of producing fruits as well as corn. A place possessed of such singular advantages, and situated at a convenient distance, between the Gulf of Persia and the Mediterranean, was soon frequented by the caravans which conveyed to the nations of Europe a considerable part of the rich commodities of India. Palmyra insensibly increased into an opulent and independent city, and, connecting the Roman and the Parthian monarchies by the mutual benefits of commerce, was suffered to observe an humble neutrality, till at length, after the victories of Trajan, the little republic sunk into the bosom of Rome, and flourished more than one hundred and fifty years in the subordinate though honourable rank of a colony. It was during that peaceful period, if we may judge from a few remaining inscriptions, that the wealthy Palmyrenians constructed those temples,