When Cattle are Sick and the Disease is not known (Spell)

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

When Cattle are Sick, and the Disease is not known.

On St. Walpurgis Day, early, before sunrise, break cowslip flowers, powder them, and let the cattle take them.

The grimoire Egyptian Secrets of Albertus Magnus lists this spell.

Timeline of related events