From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:
For the Windgalls in Horses.
Take three ounces of rendered lard, one ounce of laurel oil, and one ounce of powdered Spanish fly. Pound these articles, put them into a tin box, clip the hair carefully from the galls, and put the plaster carefully thereon. Tie the horse until the gall runs out, so that the horse cannot tear it open with his teeth. Apply mornings and evenings.
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)