The Ancient Volcanoes of Great Britain, Volume 2 (of 2)Note 159 — Chapter XXXIV · THE SYSTEM OF DYKES IN THE TERTIARY VOLCANIC SERIESReading editionTrans. Roy. Soc. Edin. vol. xxii. (1861), p. 650.◇Copy noteReturn to CHAPTER XXXIV THE SYSTEM OF DYKES IN THE TERTIARY VOLCANIC SERIES