Note 629 — INDIGO.
William Johnston translation
Gum and gummy substances of every kind used to make ink thicker and give it more body, were called ferrumen. See Petronius, cap. 102, 15.
William Johnston translation
Gum and gummy substances of every kind used to make ink thicker and give it more body, were called ferrumen. See Petronius, cap. 102, 15.