Semiramidis Fossa was no doubt a canal; Chesney saw traces of an ancient canal below Zelebîyeh. The distance from Thillada to Basilia is not given by Isidorus. Ritter would allow 5 sch. and Herzfeld 7 sch. (_Memnon_, 1907, p. 92); according to my reckoning both these distances are too long. I marched from Khmeiḍah to Zelebîyeh in 3 hrs. 40 min., which implies a distance of not more than 3 sch. For the fourteenth station, Allan, Umm Rejeibah is the only possible site I saw. It is true that I reached it in 3 hrs. from Zelebîyeh, whereas Isidorus puts it 4 sch. from Basilia, but I cut straight across the hills, and if I had followed the river (_i. e._ from the mouth of the canal, Semiramidis Fossa) the time needed would have been considerably longer. The fifteenth station, Biunan, was conjectured by Ritter to lie opposite Deir. I saw no traces of ruins upon the left bank, though Sachau speaks of the remains of two bridges (_Reise_, p. 262), and I should be more inclined to look for Biunan at a nameless site mentioned by Moritz (_op. cit._, p. 36). The difference is not in any case of importance, for the site seen by Moritz is immediately below Deir. He would have it to be Phaliga, which is doubtless Pliny’s Phaliscum, but that suggestion is difficult to reconcile with Isidorus’s 14 sch. from Basilia to Phaliga, which brings Phaliga much nearer to Circesium. Moreover, Isidorus states that Nabagath is near Phaliga--so near that he does not trouble to give any other indication of the distance between the two stations--and as Nabagath on the Aburas cannot be other than Buseirah, Phaliga too must be close to the Khâbûr mouth. I did not see the site mentioned by Moritz because I neglected to follow the river closely immediately below Deir; if it be, as I suppose, Biunan, I cannot attempt to identify the site of Phaliga. The seventeenth station, Nabagath, is, as has been said, Circesium-Ḳarḳîsîyâ-Buseirah. The eighteenth, Asikha, I would identify with the Zeitha of Ptolemy and Ammianus Marcellinus, and with the mounds I saw at Jemmah. For the nineteenth station, Dura, I know no other site than the very striking tell of Abu’l Ḥassan, the biggest mound upon this part of the river. Müller has suggested that the mound may represent Ptolemy’s Thelda (in his edition of _Ptolemy’s Geography_, p. 1003). Ammianus Marcellinus also mentions “a deserted town on the river” called Dura. The army of Julian reached it in two days’ march from Zeitha, at which place the emperor had made an oration to his soldiers after sacrificing at Gordian’s tomb. Now two days’ march from Zeitha-Jemmah would bring the army to Werdî-Irzî, which is no doubt the place called by Xenophon Corsote and described by him as “a large deserted city.” It is perhaps worthy of observation that, in spite of its being deserted, Cyrus provisioned his army at Corsote and that Julian’s army found at Dura, though it too was deserted, “quantities of