Note 77 — Chapter IV · PART I. THE AQUEDUCTS.

‘The three aqueducts’ in this passage may mean either the Anio Vetus, the Marcia, and the Claudia, all of which come from the neighbourhood of Subiaco, and follow the same line on the bank of the river Anio, and the cliffs above it as far as Tivoli, but diverge considerably between Tivoli and the Piscinæ; or it may mean that the Tepula and the Julia coming from near Marino, and the Marcia coming from Tivoli, meet at this point—both are true. The piscinæ of the Claudia, the Anio Novus, the Marcia, the Tepula, the Julia, are all within half-a-mile of each other.