Note 457 — PART I. (continued 2)

This is made of a mineral substance, called also Ispahany, from the place it is brought from. It appears to be a rich lead-ore, and is prepared by roasting it in a quince, apple, or trufle: then it is levigated with oil of sweet almonds on a marble-stone. If intended to strengthen the eyes, they often add flowers of olibanum or amber.