Note (16) — BOOK V.
James Greive translation
16. Apronitre.) The spume or froth of nitre was of a purplish colour, and the lighter the better. It had the same virtues with nitre.—Id. lib. v. cap. 905.
James Greive translation
16. Apronitre.) The spume or froth of nitre was of a purplish colour, and the lighter the better. It had the same virtues with nitre.—Id. lib. v. cap. 905.