Note 30 — Chapter II · THE SERPENTINE GOD OF MEDICINE AT ROME.
Reading edition
Pilgrimage of the Tiber, p. 63. London, 1875. Tiberius ascended the throne, A.D. 14. Plutarch, writing half a century later, says of the island: “It is now sacred to religious uses.” Life of Publicola. He states that several temples and porticoes had been built on it, but makes no reference to a prison.