From Amboglanna the Wall and the road follow the same line as far as the village of Banks. For 500 yards west of Birdoswald, the Wall is the south boundary of the road. From that point onwards to Banks the Wall is the foundation of the road. This was ascertained by excavations made by the late Mr. J. P. Gibson and Mr. F. G. Simpson, who found that two Wall turrets (known as High House and Apple-tree turrets) come within the road-boundary, as also does a quarter of the mile-castle known as High House mile-castle. In these turrets and the mile-castle four floors were traceable, the dates of which are roughly as follows, beginning with the highest: 1. About 300 A.D. 2. 210 A.D. under Severus. 3. 158 A.D. " Antoninus Pius. 4. 120-125 A.D. " Hadrian. The Vallum on the left and the Wall-ditch on the right call for notice all along this stretch of road; and here also is something unique, the turf-wall, running to meet the Great Wall at Wallbowers. As has been mentioned, it starts from near Harrow's Scar mile-castle, and is like the string of a bow, the Great Wall being the bow. On the "Pilgrimage" in September 1920, sections {170} of the turf-wall were cut to show the black and white lines marking the limits of the turves. The vegetable-matter turns black, and bleaches the soil that comes next to it. At Coome Crag I turned off to the left to see the Roman quarrymen's marks. I knocked at the lodge-door to ask for a guide, but only a dog replied, and he was chained. So I followed the path, which runs through a beautiful wood, sloping down towards the Irthing; and I had no difficulty in finding the quarry, and the Roman names, cut rather near the bottom of a large mass of rock with a flat wall-like surface. How surprised "SECVRVS" and "IVSTVS" and "MATHRIANVS" would have been if they had been told that thousands would follow the path to the quarry, like pilgrims to a shrine, just to see the names they had cut in an idle moment during their lunch-hour! It may be that they were employed by Severus in repairing the Wall, for there is another inscription, "FAVST ET RVF COS," and Dr. Bruce tells us that Faustinus and Rufus were Consuls in 210 A.D., just when Severus was in Britain. Near Leahill farm-house, on the right of the road, the Wall-ditch is in excellent condition. It had been very hot and close in the Coome Crag woods, but now there was a cool exhilarating breeze. On the left the Lake-mountains had come clearly into view, Helvellyn, Blencathra and snow-capped {171} Skiddaw. I passed a number of cottages which had been allowed to fall into disrepair and would soon disappear altogether.