In the lower part of this plate is seen the Wall of Rome on the northern side of the Porta Maggiore, with the tomb of Eurysaces the Baker in front of it. The wall here makes an angle, and the section of it is shewn just beyond the gate; the Claudia and Anio Novus (which here passed over it) are shewn in section, the _specus_ of the Claudia being nearly square, that of the Anio Novus over it considerably higher in its proportions. The Marcia, Tepula, and Julia here pass under these at a right angle, and through the wall, which in that part is made by filling up the arches of the Claudian arcade of the aqueducts. A pier of the Marcian arcade is shewn in the lower part of the section. The Aqua Felice is carried between the Julia and the Claudia, and it continues on to the Porta Tiburtina, always at the same level, over the Marcian arcade, but between the gates it passes through higher ground, and is therefore in that part underground, but emerges on arches at the two ends, near the gates, as Frontinus mentions. The Claudian arcade terminated at a tower in an angle of the wall, just to the north of this view, and with a great reservoir within the wall. In the upper view the Porta Tiburtina is shewn, with the Marcia, Tepula, and Julia passing over it. The different levels of the old road and the new one are also shewn. The arch on which the aqueducts are carried has inscriptions upon it of the time of Augustus, A.D. 10, and is of his time; it is buried up to the springing of the actual arch; the jambs are entirely buried by the filling up of the foss-way, but the two arches of the time of Honorius, A.D. 405, are tall arches, standing on the ground at its present level; the raising of the level of the road, therefore, took place between A.D. 10 and A.D. 400. PLATE XII. ANIO NOVUS—NYMPHÆUM, WHERE THE TROPHIES OF MARIUS WERE HUNG. A. SECTION OF THE TOWER AND ARCHES. B, C. PLANS OF THE THREE STORIES. [Illustration: XII. THE AQUEDUCTS.—ANIO NOVUS. AT THE NYMPHÆUM, WHERE THE TROPHIES OF MARIUS WERE HUNG. A. SECTION OF THE TOWER AND ARCHES. B. C. PLANS OF THE THREE STORIES.]