Note 4 — Chapter XVI · PLANT LORE, DRUG CHARMS, AND FOLK MEDICINE.
Reading edition
The Egyptian magical texts show that hair, feathers, the serpent’s skin, and “the blood of the mystic eye,” were used as charms of protecting or destroying power. This very probably denotes what is known as the charm of dragon’s blood, which is still employed as a potent love charm or philtre, the blood being now typified by the red resin of this name.