Note 40 — Chapter IV · PART I. THE AQUEDUCTS.

This branch is believed to have been called Aqua Antoniniana, as it conveyed water to supply the great Thermæ of the Antonines, called after Antoninus Caracalla. But it seems doubtful whether it may not be the Severiana, which conveyed water to the Thermæ of Septimius Severus. There appear to have been two aqueducts along this point of the Via Latina at different levels, and the higher one, passing over the Arch of Drusus, is said to have been a branch from the Marcia.