Climate and Time in Their Geological RelationsNote 304 — Chapter XXX · THE PHYSICAL CAUSE OF THE MOTION OF GLACIERS.—THEORIES OF GLACIER-MOTION.Reading editionProceedings of Bristol Naturalists’ Society, p. 37 (1869).◇Copy noteReturn to CHAPTER XXX. THE PHYSICAL CAUSE OF THE MOTION OF GLACIERS.—THEORIES OF GLACIER-MOTION.