Note 78 — Chapter IV · PART I. THE AQUEDUCTS.
Reading edition
Dr. F. Gori says that the lake of S. Lucia, in the territory of Arsoli, near Subiaco, is not the source of the Aqua Marcia, but of the Aqua Claudia only, and that the sources of the Aqua Marcia are nearer to Subiaco, and are called by the people Acque Serene. He also considers that the branch of the Aqua Augusta added to the Marcian by Augustus, now called Le Rosoline, comes from near the village of Agosta, and that the spring, now called La Fonte (Fons novus Antoninianus), added to the Marcian by Antoninus Caracalla, is under the same village of Agosta. One of the inscriptions on the Porta S. Lorenzo records this. See Delle varie Sorgenti dell’ Acqua Marcia, &c., pp. 56, 57.