Note 90 — ARCHIL.
William Johnston translation
[Lacmus or litmus is now prepared from Lecanora tartarea, the famous Cudbear, so called after a Mr. Cuthbert, who first brought it into use. It is imported largely from Norway, where it grows more abundantly than with us; yet in the Highland districts many an industrious peasant gets a living by scraping off this lichen with an iron hoop, and sending it to the Glasgow market.]