The Ancient Volcanoes of Great Britain, Volume 2 (of 2)Note 316 — Chapter XLII · THE BASIC SILLS OF THE BASALT-PLATEAUXReading editionTrans. Norfolk Nat. Hist. Soc. vol. iii. (1880) p. 61.◇Copy noteReturn to CHAPTER XLII THE BASIC SILLS OF THE BASALT-PLATEAUX