The country of the Nabataei, of which Petra was the chief town, is well characterized by Diodorus,[Diod. Sic.l.2,c.48.] as containing some fruitful spots, but as being for the greater part, desert and waterless. With equal accuracy, the combined information of Eratosthenes, [Eratosth. ap. Strab. p.767.] Strabo,[Strabo, p.779.] and Pliny, [Plin. Hist Nat.l.6,c.28.] describes Petra as falling in a line, drawn from the head of the Arabian gulf (Suez) to Babylon,--as being at the distance of three or four days from Jericho, and of four or five from Phoenicon, which was a place now called Moyeleh, on the Nabataean coast, near the entrance of the AElanitic gulf,--and as situated in a valley of about two miles in length surrounded with deserts, inclosed within precipices, and watered by a river. The latitude of 30 degrees 20 minutes [p.vii]ascribed by Ptolemy to Petra, agrees moreover very accurately with that which is the result of the geographical information of Burckhardt. The vestiges of opulence, and the apparent date of the architecture at Wady Mousa, are equally conformable with the remains of the history of Petra, found in Strabo,[P.781.] from whom it appears that previous to the reign of Augustus, or under the latter Ptolemies, a very large portion of the commerce of Arabia and India passed through Petra to the Mediterranean: and that ARMIES of camels were required to convey the merchandise from Leuce Come, on the Red Sea,[Leuce Come, on the coast of the Nabataei, was the place from whence AElius Gallus set out on his unsuccessful expedition into Arabia, (Strabo, ibid.) Its exact situation is unknown.] through Petra to Rhinocolura, now El Arish. But among the ancient authorities regarding Petra, none are more curious than those of Josephus, Eusebius, and Jerom, all persons well acquainted with these countries, and who agree in proving that the sepulchre of Aaron in Mount Hor, was near Petra.[Euseb. et Hieron. Onomast. in Greek text]. Joseph. Ant. Jud.l.4.c.4.] For hence, it seems evident, that the present object of Musulman devotion, under the name of the tomb of Haroun, stands upon the same spot which has always been regarded as the burying-place of Aaron; and there remains little doubt, therefore, that the mountain to the west of Petra, is the Mount Hor of the Scriptures, Mousa being, perhaps, an Arabic corruption of Mosera, where Aaron is said to have died. [Deuter.c.x.v.6. In addition to the proofs of the site of Petra, just stated, it is worthy of remark that the distance of eighty-three Roman miles from Aila, or AElana, to Petra, in the Table (called Theodosian or Peutinger,) when compared with the distance on the map, gives a rate of about 7/10 of a Roman mile to the geographical mile in direct distance, which is not only a correct rate, but accords very accurately with that resulting from the other two routes leading from Aila in the Table, namely, from Aila to Clysma, near the modern Suez, and from Aila to Jerusalem.