According to Johan Weyer, Buer is a demon of the second
class who has the form of a star and is gifted with a knowledge
of philosophy and of the virtues of medicinal herbs. He gives
domestic felicity and health to the sick. He has charge over 15
Weyer, Johannes. Witches, Devils, and Doctors in the Renaissance
Johann Weyer, De Praestigiis. Edited by George Mora.
Binghamton, N.Y. Medieval and Renaissance Texts and
Studies, 1991.