John Ruskin: The Argument of the Eye, which comments, “A geological view: Ruskin's key letters mark the principal features of Mont Blanc; 'a-b' indicate cleavage, 'c-d' indicate bedding.”
. John Ruskin. 1849. Source: Plate 8 in Hewison,Bibliography
Hewison, Robert. John Ruskin: The Argument of the Eye. Princeton: Princeton University Press, 1976. Plate 8 in Hewison. [Click on image to enlarge it.]
Last modified 1 September 2014