Climate and Time in Their Geological RelationsNote 251 — Chapter XXVII · PATH OF THE ICE-SHEET IN NORTH-WESTERN EUROPE AND ITS RELATIONS TO THE BOULDER CLAY OF CAITHNESS.[250]Reading editionSee Phil. Mag. for November, 1868, p. 374.◇Copy noteReturn to CHAPTER XXVII. PATH OF THE ICE-SHEET IN NORTH-WESTERN EUROPE AND ITS RELATIONS TO THE BOULDER CLAY OF CAITHNESS.[250]