(41) Aroueris, or Thoth, one of the five immortals, protected the infant Horus from the wrath of Typhon after the murder of Osiris. He also revised the ancient Egyptian calendar by increasing the year from 360 days to 365. Thoth Hermes was called "The Dog-Headed" because of his faithfulness and integrity. He is shown crowned with a solar nimbus, carrying in one hand the Crux Ansata, the symbol of eternal life, and in the other a serpent-wound staff symbolic of his dignity as counselor of the gods.