Hermetic Powder
.The sympathetic powder, supposed to possess a healing influence from a distance. The mediæval philosophers were very fond of calling books, drugs, etc., connected with alchemy and astrology by the term hermetic, out of compliment to Hermēs Trismegisʹtus. (Sir Kenelm Digby: Discourse Concerning the Cure of Wounds by Sympathy.)
“For by his side a pouch he wore
Replete with strange hermetic powder,
That wounds nine miles point-blank would solder.”
