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CHAP. XV.
MAP OF EXTINCT GLACIER OF THE RHONE.
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have done had they been transported by floating ice, but continue to keep to the side to which they belonged, assuming
Fig. 42
MAP SHOWING THE SUPPOSED COURSE OF THE ANCIENT AND NOW EXTINCT GLACIER OF THE RHONE, AND THE DISTRIBUTION OF THE ERRATIC BLOCKS AND DRIFT CONVEYED BY IT TO THE GREAT VALLEY OF SWITZERLAND AND THE JURA.
that they once formed part of a right lateral moraine of a great extinct glacier. That glacier, after arriving at the lower end of the long narrow valley of the upper Rhone at f, filled the lake of Geneva, f, i, with ice. From f, as from a great vomitory, it then radiated in all directions, bearing along with it the moraines with which it was loaded, and spreading them out on all sides over the great plain. But
