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,[C] 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 a 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 honorable 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, palaces, and porticos of Grecian architecture whose ruins, scattered over an extent of several miles, have deserved the curiosity of our travelers. The elevation of Odenathus and Zenobia appeared to reflect new splendor on their country, and Palmyra for a while stood forth the rival of Rome: but the competition was fatal, and ages of prosperity were sacrificed to a moment of glory.
[C] Five hundred and thirty-seven miles from Seleucia, two hundred and three from the nearest coast of Syria, according to Pliny.
In his march over the sandy desert between Emesa and Palmyra, the Emperor Aurelian was perpetually harassed by the Arabs; nor could he always defend his army, and especially his baggage, from those flying troops of active and daring robbers who watched the moment of surprise and eluded the slow pursuit of the legions. The siege of Palmyra was an object far more difficult and important, and the Emperor, who with incessant vigor pressed the attacks in person, was himself wounded with a dart. "The Roman people," says Aurelian, in an original letter, "speak with contempt of the war which I am waging against a woman. They are ignorant both of the character and of the power of Zenobia. It is impossible to enumerate her warlike preparations of stones, of arrows, and of every species of missile weapons. Every part of the walls is provided with two or three _balistæ_, and artificial fires are thrown from her military engines. The fear of punishment has armed her with a desperate courage. Yet still I trust in the protecting deities of Rome, who have hitherto been favorable to all my undertakings." Doubtful, however, of the protection of the gods and of the event of the siege, Aurelian judged it more prudent to offer terms of an advantageous capitulation: to the Queen, a splendid retreat; to the citizens, their ancient privileges. His proposals were obstinately rejected, and the refusal was accompanied with insult.