From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:
Ointment for a Boil that fails to Break.
Take some covidalis for five cents, a little honey, saffron, the yolk of an egg, and a little flour; put all of these articles into an earthen pot, mix well. This will give a most excellent plaster.
The grimoire Egyptian Secrets of Albertus Magnus lists this spell.
Timeline of related events
1725Publication of Egyptian Secrets of Albertus Magnus (lists this spell)
1869English-language translation of Egyptian Secrets (lists this spell)