That those places do not belong to the region properly denominated Hedjaz, is evident; but how far this region extends eastward cannot easily be determined; and the same difficulty respecting it occurs in various directions. The editor, that he might ascertain by what boundaries we are justified in supposing Hedjaz to be separated from other provinces of Arabia, consulted a multiplicity of authors, both European and Oriental. The result, however, of his inquiry has not proved satisfactory; for to each of the neighbouring countries. [p.viii] certain writers have assigned towns, stations, and districts, which by others of equal authority are placed in Hedjaz. Such confusion may partly have arisen from the different statements of the number, extent, and names of divisions comprised within the same space; this being occupied, according to European writers, by three great regions, the Stony, the Desert, and the Happy Arabia; while Oriental geographers partition it into two, five, six, seven, or more provinces, under denominations by no means corresponding in signification to the epithets above mentioned, which we have borrowed from the Greeks and Romans. That it would be a most difficult, or scarcely possible task, to fix precisely the limits of each Arabian province, is acknowledged by that excellent geographer, D’Anville; but he seems disposed to confound the region comprising Mekka, Djidda, and Yembo, (places which, as we know, are unequivocally in Hedjaz,) with Arabia Felix. [D’Anville, Géographie Ancienne.] D’Herbelôt, in one place, declares Hedjaz to be Arabia Petraea, [See the Bibliothèque Orientale in “Hegiaz ou Higiaz”--“Nom d’une province de l’Arabie, que nous appelons Pierreuse,” &c.-- Richardson also, in his Arabic and Persian Dictionary, explains Hijaz by “Mecca and the adjacent country, Arabia Petraea;” and Demetrias Alexandrides, who translated some portions of Abulfeda’s Geography into Greek, (printed at Vienna, 1807, 8vo.) always renders Hedjaz by [Greek text] and in another he identifies it with Arabia Deserta. [“Les Provinces de Tahama et d’Iemamah sont comme au coeur du pays; celle de Hegiaz est devenue la plus célebre à cause des villes de la Mecque et de Medine, et fait avec les deux dernières que nous avons nommées ce que nous appelons l’Arabie Déserte.”--Biblioth. Orient. in “Arab.”]] Among the Eastern writers, some divide Arabia into two parts, Yemen and Hedjaz; others into five great provinces, Yemen, Hedjaz, Nedjed, Tehama, and Yemama. Bahrein has also been included; [p.ix] and Aroudh is named as an Arabian province, but appears to be the same as Yemama. Hadramaut, Mahrah, Shejr, Oman, and other subdivisions have likewise been reckoned independent provinces by some, while many confound them with the greater regions, Yemen and Hedjaz. To the latter, indeed, are often assigned even the extensive countries of Nedjed, Tehama, and Yemama.