134. Fel: i.e. the bile of every animal; hot and dry in the fourth degree. If the bile of cow or bull be put as a plaster on erysipelas, it will help with it. If the bile of a male goat be put in wounds, it will corrode the proud flesh promptly, and it will preserve them from spasm in cold weather. If the bile of a male goat be rubbed on the sort of skin disease that is called elephantiasis, it will help with it; the bile of birds is beneficial to comfort the vision, especially the bile of birds who obtain their food by violence, such as hawks and the likes. If the bile of a bull be rubbed on the testicles, this will help with hernia, as Avicenna says.