Note 100 — LETTER I.

‘A little below Orsova the Danube issues from the Iron Gate, and at a village called Severin, where it expands to a width of 1,300 yards, the foundations of the piers, corresponding in number with the statement of the historian, have been seen when the water was more than usually low. Here, then, as is now generally agreed, stood the bridge of Trajan’s architect, Apollodorus.’—Merivale, History of the Romans, chap. lxiii.