What Black Snails are Good for (Spell)

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

What Black Snails are Good for.

They exterminate warts and corns on hands and feet, heal ruptures and other injuries. They must be prepared thus: Put all the snails together in a pot, throw much salt therein, bury the pot for nine days, after this distil the matter in a glass in the sun.

The grimoire Egyptian Secrets of Albertus Magnus lists this spell.

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