Liber Studiorum. Source: Hewison, John Ruskin: The Argument of the Eye, which explains, “In Modern Painters 2 Ruskin demonstrates the operation of the associative imagination by instructing the reader to cover up each part of the plate in turn and observe the dependency of each section on the other. His instructions are quoted in full in note 6 [Click on image to enlarge it.]. J. M. W. Turner. engraving from
Hewison, Robert. John Ruskin: The Argument of the Eye. Princeton: Princeton University Press, 1976. [Plate 15 in Chapter 4].
2 September 2014