To make a Blister (Spell)

From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:

To make a Blister.

Take cantharides (Spanish fly powder), 4 ounces; turpenĀ­tine, 8 ounces; yellow bees'-wax, 4 ounces; linseed oil, 6 ounces. Mix these ingredients to a plaster.

The grimoire Egyptian Secrets of Albertus Magnus lists this spell.

Timeline of related events