When a Horse is Charmed or Bewitched (Spell)

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

When a Horse is Charmed or Bewitched.

This will be discerned when the animal constantly sweats, retains the food or hay a long time in the mouth; for this take: Fern leaves, Roman chamomile, dill, of each one ounce, ground to powder, and without any danger burn and pulverize one ounce of fish bones, one ounce of wood, such as floats upon running water, and must be obtained before sunrise. All these articles well mixed and in three different motions poured out into one quart of wine vinegar, no matter at what hour or time. Whenever the horse is to take this drink, take a bone of a dog, and hang it under the right side of the horse's mane. By this usage the charm will cease and eventually subside.

The grimoire Egyptian Secrets of Albertus Magnus lists this spell.

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