Geology and RevelationNote 100 — Chapter XVII · SUBTERRANEAN HEAT—ITS POWERS ILLUSTRATED BY UNDULATIONS OF THE EARTH’S CRUST.Reading editionLyell, Principles of Geology, vol. ii., p. 176.◇Copy noteReturn to CHAPTER XVII. SUBTERRANEAN HEAT—ITS POWERS ILLUSTRATED BY UNDULATIONS OF THE EARTH’S CRUST.