From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
22 Oct 1861
Source of text:
Natural History Museum, Library and Archives (General Special Collections DC AL 7/1)
Summary:
Ice could not have formed the blockages in Lochaber unless in every case the water escaped over some col into a contiguous valley on the same watershed, or into the eastern watershed. Supposes that the cols were not land-straits, but the places where the lakes were drained when forced to flow the wrong way.
Contributor:
Darwin Correspondence Project