The Ancient Volcanoes of Great Britain, Volume 2 (of 2)Note 318 — Chapter XLII · THE BASIC SILLS OF THE BASALT-PLATEAUXReading editionQuart. Jour. Geol. Soc. vol. xxxiv. (1878) p. 692.◇Copy noteReturn to CHAPTER XLII THE BASIC SILLS OF THE BASALT-PLATEAUX