Note 138 For the city and pass of Derbend, see D'Herbelot, (Bibliot. Orient. p. 157, 291, 807,) Petit de la Croix. (Hist. de Gengiscan, l. iv. c. 9,) Histoire Genealogique des Tatars, (tom. i. p. 120,) Olearius, (Voyage en Perse, p. 1039 - 1041,) and Corneille le Bruyn, (Voyages, tom. i. p. 146, 147:) his view may be compared with the plan of Olearius, who judges the wall to be of shells and gravel hardened by time.]

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The History Of The Decline And Fall Of The Roman Empire —Fall In The East —Chapter 40