The difference between good and bad angels: the good render service to God, the bad claim worship for themselves; the Vestal virgin Claudia Quinta gives proof of her chastity by towing with her girdle a boat that conveys a statue of Cybele; the serpent (as dragon) from Epidaurus accompanying Aesculapius on his voyage by ship to Rome; Tarquin Priscus (Tarquin the Elder) cuts a whetstone with a razor (background)