The Ancient Volcanoes of Great Britain, Volume 1 (of 2)Note 369 — Chapter XX · VOLCANOES OF THE LOWER OLD RED SANDSTONE OF "LAKE CALEDONIA"—continuedReading editionMemoir on Sheet 15 Geol. Surv. Scotland (1871), p. 22.◇Copy noteReturn to CHAPTER XX VOLCANOES OF THE LOWER OLD RED SANDSTONE OF "LAKE CALEDONIA"—continued