[131: The walls, which, three mètres in height and two mètres in thickness, with broad outer fosse and many remains of forts, stretch in two almost parallel lines, partly--to the length of ninety-four miles--from the left bank of the Pruth by way of Tabak and Tatarbunar to Dniester-Liman, between Akerman and the Black Sea; partly--to the length of sixty-two miles--from Leowa on the Pruth to the Dniester below Bendery (Petermann, _Geograph. Mittheilungen_, 1857, p. 129), may perhaps be also Roman; but there has not been as yet any exact settlement of this point.] [132: According to von Vincke's estimate (_Monatsberichte über die Verhandlungen der Gesellschaft für Erdkunde in Berlin_ in the years 1839-40, p. 197 f.; comp. in von Moltke's _Briefe über Zustände in der Turkei_, the letter of 2d Nov. 1837), as well as according to the delineations and plans of Dr. C. Schuchhardt communicated to me, three barriers were here constructed. The south-most and probably oldest is a simple earthen wall with (singularly) a fosse in front of it towards the south; whether of Roman origin may be doubtful. The two other lines are an earthen wall, even now at many places as high as three mètres, and a lower wall, once lined with stones, which often run close beside each other and elsewhere again are miles apart. We might hold them as the two lines of defence of a fortified road, though in the eastern half the earthen wall, in the more southern half the stone-wall, is the more northerly, and they cross in the middle. At one spot the earthen wall (here more southerly) forms the rear of a fort constructed behind the stone-wall. The earthen wall is covered on the north side by a deep, on the south side by a shallow, fosse; each fosse is closed off by a bank. A fosse lies also in front of the stone-wall to the north. Behind the earthen wall, and mostly resting on it, are found forts distant from each other seven hundred and fifty mètres; others at irregular distances of the like kind behind the stone-wall. All the lines keep behind the Karasu-lakes as the natural basis of defence; from the point where this ceases, they are carried as far as the sea with slight regard to the character of the ground. The town Tomis lies outside of the wall and to the north of it; but its fortress-walls are put in connection with the barrier-fortification by a special wall.] [133: _Vita Hadriani_ 6: _cum rege Roxolanorum qui de imminutis stipendiis querebatur cognito negotio pacem composuit_.]