Edinburgh New Philosophical Journal (1852) Edinburgh New Philosophical Journal edinburghnewphil531852 Year: 1852 Erratics of the Alps. 287 limestone rock (L in the small section, figure 1 below) is washed at the foot by the Aar (r), which it overhangs, and the surface on which the blocks (6) rest is extremely steep. To the upper ones* about 300 feet above the river, I could only ascend by using both hands and feet. Some of them contained one Or two cubic yards of stone, and were in situations from which a slight force would precipitate them to the bottom. I was agreeably surprised, for I did
Edinburgh New Philosophical Journal (1852) Edinburgh New Philosophical Journal edinburghnewphil531852 Year: 1852 Erratics of the Alps. 287 limestone rock (L in the small section, figure 1 below) is washed at the foot by the Aar (r), which it overhangs, and the surface on which the blocks (6) rest is extremely steep. To the upper ones* about 300 feet above the river, I could only ascend by using both hands and feet. Some of them contained one Or two cubic yards of stone, and were in situations from which a slight force would precipitate them to the bottom. I was agreeably surprised, for I did not ex- pect to meet with facts illustrative of the erratic formation so easily. The granite blocks came from q, or some place within the boundary line I m n—that is, they had travelled twenty miles or more. In this simple fact I had presumptive evidence that the agents which transported them were not currents of water; for currents strong enough to bring them hither would not have left them on a steep ledge of rock from which a slight impulse would detach them. \&;b loq hmA j Fi 1? 2, 3. ' • wo I ed* $si mrm. 1—r 71 1 gnol 89Vim ewM 4 £ nr
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