Climate and Time in Their Geological RelationsNote 140 — Chapter XVII · FORMER GLACIAL EPOCHS.—REASON OF THE IMPERFECTION OF GEOLOGICAL RECORDS IN REFERENCE TO THEM.Reading editionQuart. Journ. Geol. Soc., vol. ix., p. 306.◇Copy noteReturn to CHAPTER XVII. FORMER GLACIAL EPOCHS.—REASON OF THE IMPERFECTION OF GEOLOGICAL RECORDS IN REFERENCE TO THEM.