Robert Fludd and Healing Crafts

"Fludd had supported the use of the weapon-salve in his Anatomiae amphitheatrum; this was the Paracelsian doctrine that a wound could be cured by anointing the weapon which caused it with a mixture of the patient's blood, moss grown on a human skull, and mummy (human flesh from the body of a hanged man). The cure is based on the theory that there is a magnetic or sympathetic relationship between the weapon and the wound which allows for action over distance to occur; the wound itself needs only to be disinfected with the patient's own urine."

From the Oxford Dictionary of National Biography