therefore been possible hitherto to attempt to place in any continuous sequence the sites given by ancient authorities. Of these the fullest list is that of the Parthian stations furnished by Isidorus of Charax (_Geographi Græci Minores_, ed. by Müller, Vol. I. p. 244). It begins with the fixed point of Nicephorium (Raḳḳah) and ends with another fixed point, that of Anatho (’Ânah). Between these two lies Nabagath on the Aburas. The Aburas may safely be assumed to indicate the Khâbûr, and Nabagath is therefore Circesium-Buseirah. The following comparative table shows my suggestions for the remaining stations, combined with those which have already been made by Ritter and others. The times given are the rate of travel of my caravan; between Raḳḳah and Deir I had the advantage of comparing them with Sachau’s time-table. No two caravans travel over any given distance at exactly the same pace, but the general average works out without any grave discrepancy. I have often tried to reckon the speed at which my caravan travels and have come to the conclusion that it is very little under three miles an hour, say about two and seven-eighths miles an hour. Isidorus computes his distances by the schœnus. According to Moritz 1 schœnus = 5·5 kilometres. From Buseirah to ’Ânah I travelled over Isidorus’s road at the rate of 1 schœnus in 1 hr. 7 min., which would bring the schœnus down to 5·166 kilometres. The section from Raḳḳah to Buseirah is not so easy to calculate because Isidorus has in two places omitted to give the exact distance between the stations, but my rate of travel was not far different here from that noted in the other sections. So much for the average. The individual distances do not tally so exactly, and in attempting to determine the sites, the evidence that can be gathered from the country itself seems to me to weigh heavier in the scale than the measurements given by Isidorus, especially as his inexactitude is proved by the fact that the sum of the distances he allows from station to station do not coincide with the total distances, from the Zeugma (Birejik) to Seleucia, and from Phaliga to Seleucia, as he states them. In both cases the sum of the small distances comes to a larger figure than that which he allows for the totals-- Zeugma to Seleucia 171 sch. total of distances between stations 174 sch., without the two omitted by him. Phaliga to Seleucia 100 sch. total of distances between stations 120 sch. without one omitted by him.