The line of wall which lies to the north of the present road among the bushes west of the aqueduct to the lower mill has been suggested as a remnant of the Phocian wall. The lime and sulphur deposit upon it, similar to that on the present aqueduct, shows that it carried at one time the stream from the hot springs to a mill which must have existed at its extremity. ◆The country between the Middle and East Gate.◆ The distance from the east end of the west gate to the middle gate at the first mound is one mile five furlongs. From the middle gate to the east gate is one mile three furlongs. Adding to this the length of the long passage of the west gate, which is nearly one mile, we find that the total length of the whole pass is four miles. Taking into account the necessary windings of the ancient road, the length of the pass was probably four and a half miles at least to one travelling through it. After crossing the stream from the hot springs, the modern road is flat for a few hundred yards. At this point it passes on the right a salt spring, which forms a pond beneath the third mound. After this the road begins a long ascent up the side of another fan-shaped mass of stream _débris_ similar to that found west of the hot springs. In this case, however, the mass is the combined work of a number of small torrents which come down from the mountains and issue on the plain at a short distance from one another. The great line of cliff which overhangs the middle gate now recedes. It continues indeed, but high up the mountain side, and from its base a series of bastions and rounded ridges come down towards the plain, separated from one another by the deep ravines which the streams have cut.