Note 1008 — BOOK XXXIII. THE NATURAL HISTORY OF METALS.647

See B. xxix. c. 8; where he speaks of the mistake made by the physicians in giving mineral vermilion or minium to their patients instead of Indian cinnabar. The latter substance is probably identical with that which is now used for varnishes, being imported from India, and still known as “dragons’ blood,” the resin of the Ptero-carpus draco, or Calamus palm.