From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:
A sure Remedy for Bristly Horses.
Take five cents' worth of each, of copper water and blue prepared vitriol, and half of this quantity of alentis. Put all of this in two quarts of fresh water and wash the horse's injuries morning and evenings with this. After this take some alum, and burn it upon an old spoon, also burn some grape vines to ashes, and an old shoe likewise. Sift it through a fine sieve. Afterward take the alant and the latter two articles, and the horse is washed with the above water, strew some of the powder upon the injured parts. If this is done in the morning the horse must rest afterward for one hour before using it for work. In the evening do as well as it will suit the case.
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)