The geographer D'Anville, (l'Euphrate et le Tigre, p. 121 - 123,) and the Orientalist D'Herbelot, (Bibliotheque, p. 167, 168,) may suffice for the knowledge of Bagdad. Our travellers, Pietro della Valle, (tom. i. p. 688 - 698,) Tavernier, (tom. i. p. 230 - 238,) Thevenot, (part ii. p. 209 - 212,) Otter, (tom. i. p. 162 - 168,) and Niebuhr, (Voyage en Arabie, tom. ii. p. 239 - 271,) have seen only its decay; and the Nubian geographer, (p. 204,) and the travelling Jew, Benjamin of Tuleda (Itinerarium, p. 112 - 123, à Const. l'Empereur, apud Elzevir, 1633,) are the only writers of my acquaintance, who have known Bagdad under the reign of the Abbassides.